CECOAL   02625
CENTRO DE ECOLOGIA APLICADA DEL LITORAL
Unidad Ejecutora - UE
artículos
Título:
Podocarpaceae woods (Coniferales) from middle Jurassic La Matilde
Autor/es:
GNAEDINGER, SILVIA
Revista:
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
Editorial:
Elseiver
Referencias:
Año: 2007 vol. 147 p. 73 - 93
ISSN:
0034-6667
Resumen:
Abstract
The anatomy of Podocarpaceae petrified woods (Coniferales) from La Matilde Formation (Middle Jurassic), that crop out in the
Gran Bajo de San Julián area, of Santa Cruz province, Argentina are studied. The following species are described: Podocarpoxylon
feruglioi nov. sp., Podocarpoxylon austroamericanum nov. sp.; Circoporoxylon sanjuliense nov. sp. and Circoporopitys
argentinum nov. gen. et. sp.. The first two morphogenera correspond to specimens based on their secondary xylem (tracheid pitting,
cross-fields and ray characters), while Circoporopitys is defined considering features of the pith, primary and secondary xylem.
Also, a new combination, Circoporopitys shanense (Sahni) is proposed. Comparisons are made with other Podocarpaceae species
from Gondwana. Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.Podocarpoxylon
feruglioi nov. sp., Podocarpoxylon austroamericanum nov. sp.; Circoporoxylon sanjuliense nov. sp. and Circoporopitys
argentinum nov. gen. et. sp.. The first two morphogenera correspond to specimens based on their secondary xylem (tracheid pitting,
cross-fields and ray characters), while Circoporopitys is defined considering features of the pith, primary and secondary xylem.
Also, a new combination, Circoporopitys shanense (Sahni) is proposed. Comparisons are made with other Podocarpaceae species
from Gondwana. Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.nov. sp., Podocarpoxylon austroamericanum nov. sp.; Circoporoxylon sanjuliense nov. sp. and Circoporopitys
argentinum nov. gen. et. sp.. The first two morphogenera correspond to specimens based on their secondary xylem (tracheid pitting,
cross-fields and ray characters), while Circoporopitys is defined considering features of the pith, primary and secondary xylem.
Also, a new combination, Circoporopitys shanense (Sahni) is proposed. Comparisons are made with other Podocarpaceae species
from Gondwana. Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.nov. gen. et. sp.. The first two morphogenera correspond to specimens based on their secondary xylem (tracheid pitting,
cross-fields and ray characters), while Circoporopitys is defined considering features of the pith, primary and secondary xylem.
Also, a new combination, Circoporopitys shanense (Sahni) is proposed. Comparisons are made with other Podocarpaceae species
from Gondwana. Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.Circoporopitys is defined considering features of the pith, primary and secondary xylem.
Also, a new combination, Circoporopitys shanense (Sahni) is proposed. Comparisons are made with other Podocarpaceae species
from Gondwana. Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.Circoporopitys shanense (Sahni) is proposed. Comparisons are made with other Podocarpaceae species
from Gondwana. Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.Podocarpoxylon Gothan and Circoporoxylon Kräusel are recorded for the first time for the Argentine Jurassic.
The growth ring information of the woods suggest that they developed under very favorable environmental conditions, with a warm
and humid paleoclimate.
© 2007 Elsevier B.V. All rights reserved.
Keywords: Podocarpaceae; fossil wood; Middle Jurassic; Santa Cruz province; ArgentinaPodocarpaceae; fossil wood; Middle Jurassic; Santa Cruz province; Argentina