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| フォーマット: | Recurso digital |
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Zenodo
1972
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| オンライン･アクセス: | https://doi.org/10.5281/zenodo.4710421 |
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- <p><b><i>Lisserpeton bairdi</i> Estes, 1965</b></p><p>The material collected from the Judith River Formation and referable to <i>Lisserpeton</i> consists of a number of atlas and dorsal vertebrae and a fragmentary <i>exoccipital</i>. The Campanian specimens are indistinguishable from those of the Maestrichtian recovered from the Lance Formation, Wyoming, and the Hell Creek Formation, Montana.</p><p>DIsCUSSION: The genera <i>Scapherpeton</i> and <i>Lisserpeton</i> are common in the fauna, although the former is more frequent. The <i>Schapherpeton</i> material from the Judith River Formation is identical to that from the large collections obtained from the Lance and Hell Creek formations of Wyoming and Montana. The presence of <i>Lisserpeton</i> in the Judith River Formation extends its geologic range downward and increases its geographic distribution. To date it has been reported from the Lance Formation of Wyoming; from a number of localities near the Fort Peck Reservoir, eastern Montana; and from the late Paleocene of the same region.</p>