Paranaschisma

Paranaschisma; Temporal range: Late Triassic, Carnian PreꞒ Ꞓ O S D C P T J K Pg N I O An. La. Carn. Norian Rh.
	Lectotype partial skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Tetrapoda
Order:	†Temnospondyli
Suborder:	†Stereospondyli
Family:	†Metoposauridae
Genus:	†Paranaschisma; Kufner, 2026
Species:	†P. howardensis
Binomial name
	†Paranaschisma howardensis; (Sawin, 1944)

Paranaschisma ("near Anaschisma") is an extinct genus of temnospondyls. It is assigned to the family Metoposauridae, which filled the crocodile-like predatory niches in the late Triassic.

Taxonomy

Paranaschisma was originally named as a new species of Buettneria, B. howardensis, by Sawin in 1944, on the basis of a number of skulls from Otis Chalk Quarry 3 in Howard County, Texas. A number of later authors variously synonymized B. howardensis with Metoposaurus fraasi or M. jonesi. Long and Murry (1995) synonymized B. howardensis with Buettneria perfecta. In 2026, howardensis was found to be distinct from Tecovaserpeton and given a new genus name, Paranaschisma.

References

↑ Sawin, H.J. (1944). "Amphibians from the Dockum Triassic of Howard County, Texas". Geology. 4401: 361–399.
↑ Colbert, EH; Imbrie, J. (1956). "Triassic metoposaurid amphibians". Bulletin of the American Museum of Natural History. 110 (6): 399–452.
↑ RoyChowdhury, TK (1965). "A new metoposaurid amphibian from the Upper Triassic Maleri Formation of Central India". Philosophical Transactions of the Royal Society B Biological Sciences. 250 (761): 1–52.
↑ Long, R. A.; Murry, P. A. (1995). "Late Triassic (Carnian and Norian) tetrapods from the southwestern United States". New Mexico Museum of Natural History and Science Bulletin. 4: 254.
↑ Kufner, AM (2026). "Specimen-level phylogenetic analysis and taxonomic revision of North American metoposaurids: a case for monospecific genera in vertebrate paleontology". PeerJ. 14 e21720. doi:10.7717/peerj.21720. PMC 13615736. PMID 42801063.

This Temnospondyli-related article is a stub. You can help Wikipedia by adding missing information.

[1] Sawin, H.J. (1944). "Amphibians from the Dockum Triassic of Howard County, Texas". Geology. 4401: 361–399.

[2] Colbert, EH; Imbrie, J. (1956). "Triassic metoposaurid amphibians". Bulletin of the American Museum of Natural History. 110 (6): 399–452.

[3] RoyChowdhury, TK (1965). "A new metoposaurid amphibian from the Upper Triassic Maleri Formation of Central India". Philosophical Transactions of the Royal Society B Biological Sciences. 250 (761): 1–52.

[4] Long, R. A.; Murry, P. A. (1995). "Late Triassic (Carnian and Norian) tetrapods from the southwestern United States". New Mexico Museum of Natural History and Science Bulletin. 4: 254.

[5] Kufner, AM (2026). "Specimen-level phylogenetic analysis and taxonomic revision of North American metoposaurids: a case for monospecific genera in vertebrate paleontology". PeerJ. 14 e21720. doi:10.7717/peerj.21720. PMC 13615736. PMID 42801063.