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Dinnetherium

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Extinct genus of mammaliaforms

Dinnetherium
Temporal range: Sinemurian
~196.5–183 Ma PreꞒ O S D C P T J K Pg N
Lower jaws of Hadrocodium (A) and Dinnetherium (B and C)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Clade: Mammaliaformes
Order: Morganucodonta
Family: Megazostrodontidae
Genus: Dinnetherium
Jenkins, Crompton & Downs, 1983
Species: D. nezorum
Binomial name
Dinnetherium nezorum
Jenkins, Crompton & Downs, 1983

Dinnetherium is an extinct genus of mammaliaforms from the Early Jurassic of Arizona. The type species, D. nezorum, was named in 1983. It was discovered in a Sinemurian layer of the Kayenta Formation, within the Gold Spring Quarry 1. The holotype is MNA V3221, which is a partial right mandible.

Dinnetherium has sometimes been placed in the family Megazostrodontidae, but in 2011 the monotypic family Dinnetheriidae and order Dinnetheria were erected for the genus.

Classification

The phylogenetic position of Dinnetherium within mammaliaforms is shown in the cladogram below:

Morganucodon

Erythrotherium

Megazostrodon

Kuehneotherium

Woutersia

Dinnetherium

Bocaconodon

IGM 6855

Docodon

Haldanodon

Priacodon

Victoriaconodon

Triconodon

Trioracodon

Arundelconodon

Astroconodon

Alticonodon

Corviconodon

Amphilestes

Phascolotherium

Aploconodon

Amphidon

Comodon

Hakusanodon

Jeholodens

Repenomamus

Gobiconodon

Huasteconodon

Tinodon

Amphitherium

Spalacotheriidae

Zhangheotheriidae


References

  1. F. A. Jenkins, Jr., A. W. Crompton, and W. R. Downs. 1983. Mesozoic mammals from Arizona: new evidence on mammalian evolution. Science 222:1233-1235
  2. Sues H.-D., Clark J. M., et al (1994) A review of the Early Jurassic tetrapods from the Glen Canyon Group of the American Southwest., In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods, N. C. Fraser and H.-D. Sues (eds.), Cambridge University Press, 284-294
  3. ^ A. O. Averianov and A. V. Lopatin. 2011. Phylogeny of Triconodonts and Symmetrodonts and the Origin of Extant Mammals. Doklady Biological Sciences 436:32-35
  4. Montellano, M.; Hopson, J. A.; Clark, J. M. (2008). "Late Early Jurassic mammaliaforms from Huizachal Canyon, Tamaulipas, México". Journal of Vertebrate Paleontology. 28 (4): 1130–1143. doi:10.1671/0272-4634-28.4.1130.
Cynodontia
Synapsida
Cynodontia
    • see below↓
Cynodontia
Cynodontia
Charassognathidae
Procynosuchidae
Epicynodontia
Galesauridae
Eucynodontia
Cynognathia
Probainognathia
    • see below↓
Abdalodon diastematicus Galesaurus planiceps
Probainognathia
Probainognathia
Chiniquodontidae
Probainognathidae
Ecteniniidae
Prozostrodontia
Prozostrodontidae
Tritheledontidae
Mammaliamorpha
Tritylodontidae
Mammaliaformes
    • see below↓
Chiniquodon theotonicus

Riograndia guaibensis

Oligokyphus triserialis
Mammaliaformes
Mammaliaformes
Kuehneotheriidae
Shuotheriidae
Docodonta
Haramiyida
Euharamiyida
Hahnodontidae?
Crown-Mammalia
Morganucodon watsoni Docofossor brachydactylus
See also
Incertae sedis
Paraphyletic /
Polyphyletic groups
Taxon identifiers
Dinnetherium nezorum


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