Mionothropus

Mionothropus is an extinct genus of nothrotheriine nothrotheriid sloth which existed in Peru in the western Amazon Basin, during the late Miocene (Huayquerian age). It is known from the holotype LACM 4609/117533, which includes cranial remains, recovered from the riverbank deposits of the Iñapari Formation in the Río Acre region, were originally assigned to Nothropus priscus. It was first named by Gerardo De Iuliis, Timothy J. Gaudin and Matthew J. Vicars in 2011 and the type species is Mionothropus cartellei. The generic name is derived from "Mio", is a reference to the Miocene provenance of the holotype, and "nothropus" refers to the initial allocation of the holotype to this genus from the South American Pleistocene. The specific name honours Dr. Castor Cartelle.[1]

Mionothropus Temporal range: Late Miocene (Huayquerian) ~7.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Pilosa
Family:	†Nothrotheriidae
Subfamily:	†Nothrotheriinae
Genus:	†Mionothropus De Iuliis et al. 2011
Species
M. cartellei De Iuliis et al. 2011 (type)

Phylogeny

Cladogram after De Iuliis, Gaudin & Vicars, 2011:[1]

Nothrotheriidae	Thalassocnus   Nothrotheriinae   Mionothropus       Pronothrotherium   Nothrotheriini   Nothrotheriops     Nothrotherium

References

1. Gerardo De Iuliis, Timothy J. Gaudin and Matthew J. Vicars (2011). "A new genus and species of nothrotheriid sloth (Xenarthra, Tardigrada, Nothrotheriidae) from the Late Miocene (Huayquerian) of Peru". Palaeontology. 54 (1): 171–205. doi:10.1111/j.1475-4983.2010.01001.x.