Gateway to the Paleobiology Database
Herpetotherium knighti McGrew et al. 1959 (marsupial)

Osteichthyes - Theriiformes - Herpetotheriidae

PaleoDB taxon number: 46893

Alternative combination: Peratherium knighti

Synonyms: Centracodon delicatus Marsh 1872 (no. 44998), Entomacodon minutus Marsh 1872 (no. 46099), Peradectes morrisi Gazin 1962 (no. 50120), Peratherium morrisi Gazin 1962 (no. 50139)

Full reference: P. O. McGrew, J. E. Berman, M. K. Hecht, J. M. Hummel, G. G. Simpson and A. E. Wood. 1959. The geology and paleontology of the Elk Mountain and Tabernacle Butte area, Wyoming. Bulletin of the American Museum of Natural History 117(3):117-176

Belongs to Herpetotherium according to J. Rothecker and J. E. Storer 1996

Sister taxa: Herpetotherium innominatum, Herpetotherium merriami, Herpetotherium valens, Herpetotherium youngi

Type specimens:

  • Herpetotherium knighti: Its type locality is Hyopsodus Hill, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming
  • Centracodon delicatus:
  • Entomacodon minutus:
  • Peratherium morrisi:

Ecology: ground dwelling omnivore

Average measurements (in mm): M1 1.71 x 1.93, M2 1.91 x 2.11, M3 1.97 x 2.27, m1 1.98 x 1.08, m2 2.20 x 1.40, m3 2.30 x 1.40

Estimated body mass: 52.6 g based on M1 length, M1 width, M2 length, M2 width, M3 length, M3 width, m1 length, m1 width, m2 length, m2 width, m3 length, and m3 width