Abstract
Fossils from the late Jurassic Morrison Formation, Como Bluff, Wyoming (Tithonian, ∼140 Myr ago) show that three genera of European lizards from the later Jurassic of England and Portugal (Cteniogenys, Paramacellodus Dorsetisaurus) also inhabited North America. These specimens corroborate evidence from mammal and other terrestrial vertebrate faunal similarities that western Europe and western North America had a continuous land connection in the late Jurassic. Some of this similarity, however, is pre-Tithonian, indicating that widespread mid-Jurassic transgressive seas in Europe were no barrier to vertebrate dispersal.
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Prothero, D., Estes, R. Late Jurassic lizards from Como Bluff, Wyoming and their palaeobiogeographic significance. Nature 286, 484–486 (1980). https://doi.org/10.1038/286484a0
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DOI: https://doi.org/10.1038/286484a0
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