Cryptodontia

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.[1]

Cryptodontia
Temporal range: Middle Permian - Late Permian
Skull of Oudenodon latirostris
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Therapsida
Clade: Dicynodontia
Clade: Bidentalia
Clade: Cryptodontia
Owen, 1860
Subgroups

See text.

Synonyms
  • Cryptodontidae

Classification

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

Dicynodontia 

Eodicynodon

Pylaecephalidae

Eumantellidae

Endothiodontidae

 Therochelonia 
 Emydopoidea 

Emydopidae

Kingoriidae

Cistecephalidae

Myosauridae

 Bidentalia 
 Cryptodontia 

Rhachiocephalidae

Oudenodontidae

Geikiidae

 Dicynodontoidea 

"Dicynodon"

Lystrosauridae

 Kannemeyeriiformes 

Shansiodontidae

Kannemeyeriidae

Stahleckeriidae

Dinodontosauridae

References

  1. Kammerer, C.F.; Angielczyk, K.D. (2009). "A proposed higher taxonomy of anomodont therapsids" (PDF). Zootaxa. 2018: 1–24.


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