Probainognathidae

Probainognathidae; Temporal range: Late Triassic
	Bonacynodon skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Clade:	Probainognathia
Family:	†Probainognathidae; Romer, 1973
Genera
	†Bonacynodon; †Lepagia?; †Probainognathus;

Probainognathidae is an extinct family of carnivorous cynodonts which lived during the Upper Triassic. Its members include Bonacynodon and Probainognathus from South America,[1] and possibly the somewhat later Lepagia from Europe. The family was established by Romer in 1973. Its members were closely related to the clade Prozostrodontia, which includes mammals.

Restoration of Bonacynodon

All of the genera were small animals. Probainognathus, known from a number of specimens, was about 10 cm in length and very mammal-like in terms of its anatomy. Remains of Lepagia are restricted to teeth. These most closely resemble the dentition of other carnivorous cynodonts of the Upper Triassic.

References

Martinelli, A. G.; Soares, M. B.; Schwanke, C. (2016). "Two New Cynodonts (Therapsida) from the Middle-Early Late Triassic of Brazil and Comments on South American Probainognathians". PLOS ONE. 11 (10): e0162945. Bibcode:2016PLoSO..1162945M. doi:10.1371/journal.pone.0162945. ISSN 1932-6203. PMC 5051967. PMID 27706191.

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[Martinelli2016-1] Martinelli, A. G.; Soares, M. B.; Schwanke, C. (2016). "Two New Cynodonts (Therapsida) from the Middle-Early Late Triassic of Brazil and Comments on South American Probainognathians". PLOS ONE. 11 (10): e0162945. Bibcode:2016PLoSO..1162945M. doi:10.1371/journal.pone.0162945. ISSN 1932-6203. PMC 5051967. PMID 27706191.