Dinnetherium Temporal range: Sinemurian ~196.5–183 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
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Lower jaws of Hadrocodium (A) and Dinnetherium (B and C) | |
Scientific 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:
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References
- 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
- 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
- ^ 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
- 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.
Taxon identifiers | |
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Dinnetherium nezorum |
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