Notostylops

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;

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.

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]

References

^ Notostylops at Fossilworks.org
^ Croft, Darin. Horned Armadillos and Rafting Monkeys. Indiana University Press.
^ Lorente, Malena; Gelfo, Javier; Lopez, Guillermo (2018). "First skeleton of the notoungulate mammal Notostylops murinus and palaeobiology of Eocene Notostylopidae". Lethaia. 52 (2): 244–259. doi:10.1111/let.12310. S2CID 135127572.
^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 250. ISBN 978-1-84028-152-1.

Media related to Notostylops at Wikimedia Commons

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[FWNotostylops-1] Notostylops at Fossilworks.org

[2] Croft, Darin. Horned Armadillos and Rafting Monkeys. Indiana University Press.

[3] Lorente, Malena; Gelfo, Javier; Lopez, Guillermo (2018). "First skeleton of the notoungulate mammal Notostylops murinus and palaeobiology of Eocene Notostylopidae". Lethaia. 52 (2): 244–259. doi:10.1111/let.12310. S2CID 135127572.

[EoDP-4] Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 250. ISBN 978-1-84028-152-1.

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