Notostylops

Notostylops ("south pillar face") is a genus of extinct South American ungulates from Eocene Argentina. Fossils of the genus have been found in the Sarmiento, Casamayor, Andesitas Huancache and Koluel Kaike Formations.^[1]

• 
  Size comparison of Notostylops murinus with a human.
• 
  Life reconstruction.

Notostylops Temporal range: Early-Late Eocene (Casamayoran-Divisaderan) ~48.6–37.2 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Notostylops
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Family:	†Notostylopidae
Genus:	†Notostylops Ameghino, 1897
Species
N. murinus (type species) Ameghino, 1897 N. appressus (Ameghino, 1902) N. pendens (Ameghino, 1901) N. pigafettai Simpson, 1948
Synonyms
Anastylops Ameghino, 1897 Catastylops Ameghino, 1901 Entelostylops Ameghino, 1901 Eostylops Ameghino, 1901 Isostylops Ameghino, 1902 Pliostylops Ameghino, 1901

Description

Notostylops was a very generalized animal, very similar to first eutherians and ungulates. It would have superficially resembled a marmot or a wombat and is suspected to have browsed on low-growing plants. It was probably adapted to a fairly wide range of ecological niches, but its robustness indicates it had some digging adaptations.^[2][3] Its tall skull housed rodent-like incisor teeth. Notostylops was about 75 centimetres (30 in) long.^[4]