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Temporal range: Upper Triassic 225 mya
Adelobasileus cromptoni.jpg
Scientific classification

Adelobasileus is an extinct proto-mammal from the Upper Triassic, about 225 million years ago. We only have a partial skull from strata in western Texas.

Skull features, such as the housing of the cochlea, suggest that Adelobasileus is a transitional form in the evolution from cynodonts to end-Triassic mammals. For this reason, it may be close to the common ancestor of modern mammals.[1][2] They move very fast according to the history of their sleek body type.

References[change | change source]

  1. Lucas S.G. & Hunt A.P. 1990. The oldest mammal. New Mexico Journal of Science 30 (1): 41–49.
  2. Lucas S.G. & Luo Z. 1993. Adelobasileus from the upper Triassic of west Texas: the oldest mammal. J. Vert. Paleont 13 (3): 309–334. [1]

Other websites[change | change source]