Dinnetherium
Extinct genus of mammaliaforms
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Dinnetherium is an extinct genus of mammaliaforms from the Early Jurassic of Arizona. The type species, D. nezorum, was named in 1983.[1] It was discovered in a Sinemurian layer of the Kayenta Formation,[2] within the Gold Spring Quarry 1. The holotype is MNA V3221, which is a partial right mandible.[3]
| Dinnetherium Temporal range: Sinemurian ~ | |
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| Lower jaws of Hadrocodium (A) and Dinnetherium (B and C) | |
Scientific classification  | |
| 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 has sometimes been placed in the family Megazostrodontidae, but in 2011 the monotypic family Dinnetheriidae and order Dinnetheria were erected for the genus.[3]
Classification
The phylogenetic position of Dinnetherium within mammaliaforms is shown in the cladogram below:[4]
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