Mammalia - Rodentia - Echimyidae
As for the genus: Small echymid rodent with three-crested, sigma-shaped lower molars. Mesodont. Molars long for their width. Mesoflexid, metaflexid from long, wide valleys, extending 2/3 transverse width tooth. Hypoflexid short. Flat bottoms reentrant. Antero-and posterolophids isolated when unworn, with wear connect by narrow bridges to ectolophulid and protolophid respectively. Hypolophulid reduced, posterolophid short. Mesoflexid merged with portoflexid. Hypoflexid transversely oriented. dp4 protoflexid shallow.
Full reference: A. H. Walton. 1990. Rodents of the La Venta Fauna, Miocene, Colombia: Biostratigraphy and Paleoenvironmentl implications. Southern Methodist University 1-147
Belongs to Ricardomys according to A. H. Walton 1990
Sister taxa: none
Type specimen: IGM-DU 87-228, a mandible (Juvenile left mandible with dp4-m2)
Ecology: scansorial herbivore
Distribution:
• Miocene of Colombia (2 collections), Peru (1)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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