Doryperimys Kramarz et al. 2015 (caviomorph)

Mammalia - Rodentia - Neoepiblemidae

Etymology. Dory, from the Greek spear, in relation to the spear-like cross section of the cheek teeth, and Perimys Ameghino, 1887a, an early Miocene chinchilloid. Diagnosis. Small neoepiblemid, size similar to adult speci- mens of Perimys incavatus Ameghino, 1902, with hypselo- dont, biprismatic cheek teeth (triprismatic in M3), with wide interprismatic cement. Differs from species of Perimys by having the following combination of characters: cheek teeth formed by comparatively broader prisms; labial apexes of the lower cheek tooth prisms much sharper (more lanceo- late occlusal contour); posterior prism of m1m2 much more extended lingually than the anterior one; lingual flexid more penetrating in m1 than in m3 (in contrast to species of Perimys); enamel remnant covering the labialmost portion of the anterior wall of the lower molars and the lingualmost portion of the posterior wall of the upper ones.

Full reference: A. G. Kramarz, M. Bond, and M. Arnal. 2015. Systematic description of three new mammals (Notoungulata and Rodentia) from the Early Miocene Cerro Bandera Formation, Northern Patagonia, Argentina. Ameghiniana 52(6):585-597

Parent taxon: Neoepiblemidae according to A. G. Kramarz et al. 2015

Sister taxa: Neoepiblema, Perimys, Phoberomys

Subtaxa: Doryperimys olsacheri

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Ecology: ground dwelling herbivore

Distribution:

• Miocene of Argentina (2 collections)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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