Notioprogonia[1] | |
---|---|
Skull of Notostylops | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | †Notoungulata |
Suborder: | †Notioprogonia Simpson 1934 |
Families | |
Notioprogonia is a suborder of the extinct mammalian order Notoungulata and includes two families, Henricosborniidae and Notostylopidae.[2]
Notioprogonia includes the most primitive notoungulates and Cifelli 1993 has argued that Notioprogonia is paraphyletic because it would include the ancestors of the remaining suborders.[3] Notioprogonia is not a natural group but an assemblage of primitive notoungulates; the two families assigned here simply do not clearly belong to any other clades.[4]