Trigonostylops
| Trigonostylops Temporal range: Late Paleocene–Early Eocene | |
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| Trigonostylops | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Superorder: | †Meridiungulata |
| Order: | †Astrapotheria |
| Family: | †Trigonostylopidae |
| Genus: | †Trigonostylops Ameghino 1897 |
| Type species | |
| Trigonostylops wortmani 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.
Phylogeny
Cladogram based in the phylogenetic analysis published by Vallejo-Pareja et al., 2015, showing the position of Trigonostylops:[2]
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Eoastrapostylops | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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References
- ↑ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 249. ISBN 1-84028-152-9.
- ↑ Vallejo-Pareja, M. C.; Carrillo, J. D.; Moreno-Bernal, J. W.; Pardo-Jaramillo, M.; Rodriguez-Gonzalez, D. F.; Muñoz-Duran, J. (2015). "Hilarcotherium castanedaii, gen. et sp. nov., a new Miocene astrapothere (Mammalia, Astrapotheriidae) from the Upper Magdalena Valley, Colombia". Journal of Vertebrate Paleontology. 35 (2): e903960. doi:10.1080/02724634.2014.903960. (subscription required (help)).
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