Pleistocene high altitude amphibians and reptiles from Colorado (Alamosa local fauna; Pleistocene, Irvingtonian)

Autor:	Karel L. Rogers
Rok vydání:	1987
Předmět:	Amphibian geography geography.geographical_feature_category Pleistocene biology Ecology Fauna Paleontology Glacier biology.animal Period (geology) Salamander Glacial period Neoteny Geology
Zdroj:	Journal of Vertebrate Paleontology. 7:82-95
ISSN:	1937-2809 0272-4634
DOI:	10.1080/02724634.1987.10011639
Popis:	Amphibian and reptile fossils were recovered from a high-altitude (2300 meters) montarne desert in south-central Colorado. The locality spans nearly 0.2 million years during the Irvingtonian land mammal age and Nebraskan Glaciation, with three main time/climatic zones apparent from analysis of the herpetofauna. A warm and dry period preceded a cold, wet period that correlates with glacial advance down the surrounding mountains, followed by a cold and dry period after the retreat of the glacier. Ambystoma alamosensis is described as a new species of salamander related to A. tigrinum. Other salamanders show evidence of neoteny in some units.
Databáze:	OpenAIRE
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