PERSONAL DE APOYO
GONZALEZ Mirta Gladys
artículos
Título:
New insect pupation chambers (Pupichnia) from the Upper Cretaceous of Patagonia Argentina
Autor/es:
GENISE, JORGE F, R.N. MELCHOR, E.S. BELLOSI, M. GONZÁLEZ Y M. KRAUSE
Revista:
CRETACEOUS RESEARCH (PRINT)
Referencias:
Año: 2007 p. 545 - 559
ISSN:
0195-6671
Resumen:
Abstract
Three new records of insect pupation chambers are reported from two localities in the Cretaceous Chubut Group of Patagonia, Argentina:
from Sierra Nevada, a new and older ichnospecies of Rebuffoichnus, R. sciuttoi isp. nov. (Coprinisphaeridae), and the first Cretaceous and South
American specimens of Pallichnus dakotensis Retallack (Pallichnidae), known until now from a single North American Oligocene locality; from
Ca~nado´n Puerta del Diablo, a new type of Rebuffoichnus casamiquelai Roselli that shows some differences from known material of the ichnospecies
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
Ca~nado´n Puerta del Diablo, a new type of Rebuffoichnus casamiquelai Roselli that shows some differences from known material of the ichnospecies
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
American specimens of Pallichnus dakotensis Retallack (Pallichnidae), known until now from a single North American Oligocene locality; from
Ca~nado´n Puerta del Diablo, a new type of Rebuffoichnus casamiquelai Roselli that shows some differences from known material of the ichnospecies
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
Ca~nado´n Puerta del Diablo, a new type of Rebuffoichnus casamiquelai Roselli that shows some differences from known material of the ichnospecies
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
from the same locality, suggesting a different trace maker. Affinities of P. dakotensis, interpreted originally as a cast of a lined pupation
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
chamber, remain unknown in the light of the new material. Its micromorphology is quite simple, with no constructed wall. R. sciuttoi has a very
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
thinly constructed wall, showing an external texture composed of lobes and fine, helically arranged ridges. Such characters are compatible with
those of wasp cocoons. R. casamiquelai, interpreted originally as a coleopteran pupation chamber, has a thickly constructed wall composed of
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and micromorphology of palaeosols indicate
that in both localities pupation occurred in vitric entisols developed on pyroclastic ash-fall deposits on a fluvial floodplain. These new records
double the number of the few Cretaceous insect pupation chambers. This is a critical period for understanding the origin and early evolution of
building behaviour in insects. Three types of Cretaceous pupation chambers can now be recognized: (1) excavated and lined, e.g. Fictovichnus
two layers of soil material, showing redistribution of clay and orientation of long grains. Macro- and mi