Protheriodon

Protheriodon is an extinct genus of probainognathian cynodonts which existed in the Santa Maria Formation of the Paraná Basin in southeastern Brazil during the middle Triassic period. It contains the species Protheriodon estudianti.[1] It was first described by Argentine palaeontologist José Bonaparte, who assigned it to the family Brasilodontidae.[2] More recent studies have however recovered it in a more basal position than other brasilodontids, just outside Prozostrodontia.[2][3]

Protheriodon Temporal range: Ladinian ~242–235 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Therapsida
Clade:	Cynodontia
Clade:	Probainognathia
Genus:	†Protheriodon Bonaparte et al., 2006
Species:	†P. estudianti
Binomial name
†Protheriodon estudianti Bonaparte et al., 2006

Cladogram from Martinelli et al., 2017:[3]

Probainognathia	Ecteninion       Chiniquodon         Bonacynodon     Probainognathus         Candelariodon       Protheriodon     Prozostrodontia

References

1. Bonaparte, J. F., Soares, M. B. & Schultz, C. L. (2006), "A new non-mammalian cynodont from the Middle Triassic of southern Brazil and its implications for the ancestry of mammals", in Harris H. D., Lucas S. G., Spielmann J. A., Lockley M. G., Milner A. R. C. & Kirkland J. L. (eds.), The Triassic-Jurassic terrestrial transition, New Mexico Museum of Natural History & Science, Bulletin, 37, p.599-607
2. 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. doi:10.1371/journal.pone.0162945.
3. Martinelli, A.; Soares, M. B.; Oliveira, T.; Rodrigues, P.; Schultz, C. (2017). "The Triassic eucynodont Candelariodon barberenai revisited and the early diversity of stem prozostrodontians". Acta Palaeontologica Polonica. 62. doi:10.4202/app.00344.2017.