Downsimus rainsi Albright III et al. 2026 (mountain beaver)

Mammalia - Rodentia - Aplodontidae

Full reference: L. B. Albright III, J. E. Starnes, G. E. Phillips and G. L. Stringer. 2026. Mammals of the early Arikareean (“middle” Oligocene) Jones Branch Local Fauna, southeastern Mississippi, USA, with notes on two older taxa from the state and the timing of Midcontinent–Gulf Coastal Plain biotic disparity. Journal of Paleontology 1-52

Belongs to Downsimus according to L. B. Albright et al. 2026

Sister taxon: Downsimus chadwicki

Type specimen: MMNS VP-7334, a tooth (right m2). Its type locality is Jones Branch Local Fauna, which is in an Arikareean terrestrial claystone in the Catahoula Formation of Mississippi.

Ecology: fossorial herbivore

Distribution: found only at Jones Branch Local Fauna

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Specimen images are retrieved through the ePANDDA API.


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