MACNBR 00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
artículos
Título:
Burrow systems evince non-solitary geomyid rodents from the Paleogene of southern Mexico
Autor/es:
GUERRERO-ARENAS, ROSALÍA; GENISE, JORGE FERNANDO; JIMÉNEZ-HIDALGO, EDUARDO
Revista:
PLOS ONE
Editorial:
PUBLIC LIBRARY SCIENCE
Referencias:
Año: 2020 vol. 15
ISSN:
1932-6203
Resumen:
We describe a new complex burrow system produced by geomyids in southern Mexico.Yaviichnus inyooensis igen. isp. nov. is composed of main large chambers near the top ofthe paleosol, from which shafts showing different morphologies and orientations radiate,some of them ending in or connected to small deeper chambers. Gregorymys spp. is proposedas the producer based on its fossorial habits, abundance in the outcrops, presence ofremains inside the burrows, and paired grooves in the walls, which are compatible with thetraces of geomyid incisors. The complexity of these burrows attests to an extended undergroundlife that would have been triggered by semiarid to arid conditions. Morphologicalcomplexity also suggests that the burrows were excavated and inhabited by more than oneindividual, indicating that Oligocene Gregorymys of southern Mexico would be a unique gregariousgeomyid.
