Topic summary
Proterosuchid
Extracted from the Wikipedia article Proterosuchidae.
Evolutionary history
A 2023 study recovered a majority of proterosuchids outside of Proterosuchus and Sarmatosuchus as belonging to a distinct subfamily, the Chasmatosuchinae, defined as "the most inclusive clade containing Chasmatosuchus rossicus, but not Proterosuchus fergusi, "Chasmatosaurus" yuani, Proterosuchus alexanderi, Proterosuchus goweri, Erythrosuchus africanus". Chasmatosuchinae contains many Triassic proterosuchids in addition to the only Permian proterosuchid, Archosaurus; this would suggest that an initial taxonomic diversification of the Proterosuchidae (including an initial taxonomic divergence between Proterosuchus and chasmatosuchines) had already occurred in the Permian.