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Eryops megacephalus Cope 1877 (tetrapod)

Osteichthyes - Temnospondyli - Eryopidae

PaleoDB taxon number: 70397

Synonyms: Anisodexis imbricarius Cope 1882 (no. 309178), Clepsydrops gigas Cope 1878 (no. 138119), Dimetrodon gigas Cope 1878 (no. 138120), Luperosaurus gigas Cope 1878 (no. 346265)

Full reference: E. D. Cope. 1877. Descriptions of extinct Vertebrata from the Permian and Triassic formations of the United States. Proceedings of the American Philosophical Society 17(100):182-193

Belongs to Eryops according to E. D. Cope 1884

Sister taxa: Eryops grandis, Eryops willistoni

Type specimens:

  • Eryops megacephalus: AMNH 4189, a skull
  • Anisodexis imbricarius: Its type locality is Coffee Creek, 34 (Arroyo Formation), which is in a Kungurian terrestrial claystone/sandstone in the Arroyo Formation of Texas.
  • Clepsydrops gigas: not AMNH 4006 (collected in 1879), as erroneously stated in Case (1907), but a specimen the whereabouts of which are unknown, a set of postcrania (pelvis).

Ecology: amphibious carnivore

Average measurements (in mm): skull length 360.0