Trogosus
Temporal range:
Trogosus hyracoides skull at the National Museum of Natural History
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: †Tillodontia
Family: †Esthonychidae
Subfamily: †Trogosinae
Genus: †Trogosus
Leidy 1871
Species[1]
  • †T. castoridens (type)
  • †T. gazini
  • †T. grangeri
  • †T. hillsii
  • †T. hyracoides
  • †T. latidens

Trogosus is an extinct genus of tillodont mammal. Fossils have been found in Wyoming, California,[2] and British Columbia,[3] and date from the Eocene between 54.8 and 33.7 million years ago. Trogosus was a bear-like herbivore with a large, short skull and flat feet, and had a skull 35 cm (14 in) long with an estimated body weight of 150 kg (330 lb).[4] It had large, rodent-like incisors, which continued growing throughout the creature's life. Judging from the heavily worn molar teeth, Trogosus fed on rough plant material, such as roots and tubers.[5]

Notes

  1. ↑ Trogosus in the Paleobiology Database. Retrieved July 2013.
  2. ↑ Miyata, Kazunori; Deméré, Thomas A. (17 February 2016). "New material of a 'short-faced' Trogosus (Mammalia, Tillodontia) from the Delmar Formation (Bridgerian), San Diego County, California, U.S.A." Journal of Vertebrate Paleontology. 36 (3): e1089878. doi:10.1080/02724634.2016.1089878. S2CID 130776132. Retrieved 11 April 2022.
  3. ↑ Russell 1935
  4. ↑ Kemp 2005, p. 240
  5. ↑ Palmer 1999, p. 236

References

  • Kemp, Tom S. (2005). The Origin and Evolution of Mammals. Oxford University Press. ISBN 0198507615. OCLC 56652579.
  • Leidy, J. (1871). "Remains of extinct mammals from Wyoming". Proceedings of the Academy of Natural Sciences. 23: 113–116. Retrieved July 24, 2013.
  • Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. ISBN 1-84028-152-9.
  • Russell, Loris Shano (1935). "A middle Eocene mammal from British Columbia". American Journal of Science. 5. 29 (169): 54–55. doi:10.2475/ajs.s5-29.169.54.


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