PaleoDB taxon number: 99584
Full reference: G. G. Simpson. 1935. Descriptions of the oldest known South American mammals, from the Rio Chico Formation. American Museum Novitates 793:1-25
Sister taxa: none
Type specimen: Amer. Mus. No. 28505, a tooth (isolated left upper molar (M1 or M2)). Its type locality is Cerro Redondo, c. 37 m above the "Banco Verde" , which is in a Paleocene terrestrial sandstone/claystone in the Peņas Coloradas Formation of Argentina.
Ecology: scansorial insectivore