Eryops megacephalus Cope 1877 (tetrapod)

Amphibia - Temnospondyli - Eryopidae

Synonyms: Anisodexis imbricarius Cope 1882, Clepsydrops gigas Cope 1878, Dimetrodon gigas Cope 1878, Eryops willistoni Moodie 1911, Luperosaurus gigas Cope 1878, Rhachitomus valens Cope 1878

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

See also Cope 1877, Cope 1878, Cope 1878, Cope 1882, Cope 1888, Hay 1902, Hay 1930, Olson 1967, Romer 1936, Schoch 2013 and Schoch and Milner 2014

Sister taxa: Eryops erythroliticus, Eryops grandis, Eryops latus

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).
  • Eryops willistoni: KU 348, a partial skeleton (skull + postcrania). Its type locality is McCann Quarry, which is in a Leonardian fluvial-deltaic sandstone/sandstone in the Wellington Formation of Oklahoma.
  • Rhachitomus valens:

Ecology: amphibious carnivore


• Permian of United States (23: Oklahoma, Texas collections)

Total: 23 collections including 24 occurrences

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Specimen images are retrieved through the ePANDDA API.

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