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Cryptodontia

Cryptodontia
Temporal range: Middle Permian - Late Triassic
Oudenodon latirostris.jpg
Skull of Oudenodon latirostris
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Order: Therapsida
Infraorder: Dicynodontia
Stem group: Bidentalia
Clade: Cryptodontia
Owen, 1860
Subgroups

See text.

Synonyms
  • Cryptodontidae

See text.

Cryptodontia is a group of dicynodont therapsids that includes the families Geikiidae, Oudenodontidae, and Rhachiocephalidae. It was first named in 1860 by English paleontologist Richard Owen. Owen intended Cryptodontia to be a family, and the name was later changed to "Cryptodontidae" to reflect this ranking. The name Cryptodontia was restored in 2009 when it was redefined as a larger clade containing several families of dicynodonts.

Below is a cladogram from Kammerer et al. (2011) showing the phylogenetic placement of Cryptodontia:

Eodicynodon

Pylaecephalidae

Eumantellidae

Endothiodontidae

Emydopidae

Kingoriidae

Cistecephalidae

Myosauridae

Rhachiocephalidae

Oudenodontidae

Geikiidae

"Dicynodon"

Lystrosauridae

Shansiodontidae

Kannemeyeriidae

Stahleckeriidae

Dinodontosauridae


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Wikipedia

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