Adelobasileus
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| Adelobasileus Temporal range: Late Triassic |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| (unranked): | Amniota |
| Class: | Synapsida |
| (unranked): | Mammaliaformes |
| Genus: | Adelobasileus |
| Species: | A. cromptoni |
| Binomial name | |
| Adelobasileus cromptoni Lucas & Hunt, 1990 |
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Adelobasileus cromptoni is a species of an extinct genus of proto-mammals from the Late Triassic (Carnian), about 225 million years ago. It is known only from a partial skull recovered from the Tecovas formation in western Texas.
Adelobasileus predates the most advanced non-mammalian cynodonts (tritylodonta and trithelodonta) and all other known Mammaliaformes by 10 million years. In fact, distinct cranial features, especially the housing of the cochlea, suggest that Adelobasileus is a transitional form in the character transformation from cynodonts to Triassic mammals. For this reason, it is thought to be the common ancestor of all modern mammals or a close relative of the common ancestor.
[edit] References
- S.G. Lucas and Zhe-Xi Luo, Adelobasileus from the upper Triassic of west Texas: the oldest mammal, J. Vert. Paleont, 1993.
[edit] External links
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