Cynognathia

Cynognathia ("dog jaw") is one of two major clades of cynodonts, the other being Probainognathia. Cynognathians included the large carnivorous genus Cynognathus and the herbivorous or omnivorous gomphodonts such as traversodontids. Cynognathians can be identified by several synapomorphies including a very deep zygomatic arch that extends above the middle of the orbit.

Cynognathian fossils are currently known from Africa, Antarctica, Asia, Europe, North America and South America.

Taxonomy

 * Suborder Cynodontia
 * Infraorder Eucynodontia
 * (unranked) Cynognathia
 * Family Cynognathidae
 * Cynognathus
 * (unranked) Gomphodontia
 * Family Diademodontidae
 * Diademodon
 * Titanogomphodon
 * (unranked) Neogomphodontia
 * Family Trirachodontidae
 * Subfamily Trirachodontinae
 * Langbergia
 * Trirachodon
 * Subfamily Sinognathinae
 * Beishanodon
 * Sinognathus
 * Cricodon
 * Family Traversodontidae
 * Etjoia
 * Nanogomphodon
 * Scalenodon
 * Subfamily Traversodontinae
 * Traversodon
 * Luangwa
 * Unnamed clade
 * Andescynodon
 * Pascualgnathus
 * Mandagomphodon
 * Subfamily Massetognathinae
 * Dadadon
 * Massetognathus
 * Santacruzodon
 * Subfamily Arctotraversodontinae
 * Arctotraversodon
 * Boreogomphodon
 * Plinthogomphodon
 * Habayia
 * Maubeugia
 * Microscalenodon
 * Mandagomphodon
 * Rosieria
 * Subfamily Gomphodontosuchinae
 * Gomphodontosuchus
 * Menadon
 * Protuberum
 * Ruberodon
 * Scalenodontoides
 * Exaeretodon
 * Siriusgnathus

Phylogeny
Cynognathians in a cladogram after Stefanello et al. (2023):