Probainognathia

Probainognathia Temporal range: early Middle Triassic - Late Jurassic (non-mammalian)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Clade:	Eucynodontia
Clade:	Probainognathia
Subgroups
Probainognathidae Chiniquodontoidea

The Probainognathians are one of the two major clades of the infraorder Eucynodontia, the other being Cynognathians. They were mostly carnivorous, though some species may have evolved omnivorous traits. The Probainognathia form into four groups: Probainognathidae, Chiniquodontidae, Tritheledontidae, and Mammaliaformes. The earliest and most basal Probainognathian is Lumkuia, from South Africa. Non-mammalian probainognathians lived from Triassic to Jurassic, making this clade one of the longest lived therapsid family.

Classification

Taxonomy

• Suborder Cynodontia
  • Infraorder Eucynodontia
    • (unranked) Probainognathia
      • Family Probainognathidae
        • Probainognathus
      • Superfamily Chiniquodontoidea
        • Family Chiniquodontidae
        • (unranked) Ictidosauria
          • Riograndia
          • Family Tritheledontidae
            • Trithelodon
        • Mammaliamorpha
          • Prozostrodon
          • Mammaliaformes *
            • Class Mammalia

Phylogeny

Probainognathia
 |-Probainognathidae
 `-Chiniquodontoidea
    |-Chiniquodontidae
    `-Ictidosauria
         |-Tritheledontidae
         `-+-Prozostrodon
           `-Mammaliaformes
               `-Mammalia

See also

• Evolution of mammals
• Prehistoric mammals
• List of prehistoric mammals