Adelobasileus: Difference between revisions
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| name = ''Adelobasileus'' |
| name = ''Adelobasileus'' |
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| fossil_range = Late [[Triassic]] |
| fossil_range = Late [[Triassic]] |
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| regnum = [[Animal]]ia |
| regnum = [[Animal]]ia |
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| phylum = [[Chordate|Chordata]] |
| phylum = [[Chordate|Chordata]] |
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| subphylum = [[Vertebrata]] |
| subphylum = [[Vertebrata]] |
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| unranked_classis = [[Amniota]] |
| unranked_classis = [[Amniota]] |
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Revision as of 17:42, 10 September 2008
| Adelobasileus Temporal range: Late Triassic
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| Genus: | Adelobasileus
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| Species: | A. cromptoni
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| 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 poorly represented in the fossil record and 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.
References
- S.G. Lucas and Z. Lou, Adelobasileus from the upper Triassic of west Texas: the oldest mammal, J. Vert. Paleont, 1993.
External links
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