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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