Trigonostylops

Trigonostylops Temporal range: Late Paleocene–Early Eocene PreЄ Є O S D C P T J K Pg N
Trigonostylops
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
(unranked):	†Meridiungulata
Order:	†Astrapotheria
Family:	†Trigonostylopidae
Genus:	†Trigonostylops Ameghino 1897

Trigonostylops is an extinct genus of South American meridiungulatan ungulate, from the late Paleocene to early Eocene of Argentina.

A complete skull of the type species, T. wortmani, has been found, and it has been classified as an astrapothere based on its large lower tusks. In comparison with the later Astrapotherium magnum, it is estimated to have been around 1.50 m (5 ft) long.^[1] Teeth, primarily molars, have been found and assigned to other species.

References

1. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 249. ISBN 1-84028-152-9.