科罗拉多州上冈尼森盆地两个高海拔洞穴中的晚更新世动物群

IF 0.5 4区 环境科学与生态学 Q4 BIODIVERSITY CONSERVATION Western North American Naturalist Pub Date : 2023-10-11 DOI:10.3398/064.083.0310
Jim I. Mead, S. Emslie, D. Meltzer
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引用次数: 0

摘要

摘要科罗拉多州的水泥溪和干草堆洞穴出土了多种多样的高海拔第四纪晚期哺乳动物化石。在丰富的哺乳动物遗迹中还夹杂着罕见的两栖动物和爬行动物化石。水泥溪洞穴(海拔 2860 米)仅有少量无尾类动物化石和数量有限的蛇类化石,而海拔更低(2450 米)的海斯塔克洞穴(Haystack Cave)则有蝾螈化石、大量蛇类化石和大量蜥蜴化石,但没有无尾类动物化石。这两个动物群在组成上总体上是不同的,虽然在物种或动物遗骸数量方面并不多样或丰富,但它们为中山西部晚更新世高海拔地区的爬行动物群提供了罕见的特殊记录。总结。科罗拉多州的水泥溪和干草堆洞穴记录了第四纪晚期高海拔哺乳动物的多样性。在丰富的哺乳动物遗骸中,我们还发现了罕见的两栖类和爬行类动物,现报告如下。在水泥溪洞穴(海拔 2860 米)中只发现了几种无尾类动物和数量有限的蛇类。而在海拔更低(2450 米)的干草堆岩洞中,发现了一种蝾螈、大量蛇类和大量蜥蜴遗骸,但没有发现无尾类动物。这两个动物群在总体构成上截然不同,虽然在物种或动物遗骸数量方面既不多样也不丰富,但它们为西部山间晚更新世高海拔地区的爬行动物群提供了一个独特而出色的记录。
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Late Pleistocene Herpetofauna from Two High-Elevation Caves in the Upper Gunnison Basin, Colorado
Abstract. Cement Creek and Haystack caves in Colorado have produced a diverse record of high-elevation late Quaternary mammals. Intermixed with the abundant mammalian remains were rare occurrences of amphibian and reptile fossils reported here. Cement Creek Cave (2860 m elevation) contained the fossils of only a few anurans and a limited number of snakes, whereas Haystack Cave, at a substantially lower elevation (2450 m), contained the fossils of a salamander, a larger number of snakes, and an extensive number of lizard remains, yet no anurans. The 2 faunas are overall distinct in composition, and, although not diverse or abundant in terms of species or number of faunal remains, they provide a rare and exceptional record of a late Pleistocene high-elevation herpetofauna from the Intermountain West. Resumen. Las cuevas Cement Creek y Haystack en Colorado han producido un diverso registro de mamíferos de gran altitud del Cuaternario tardío. Entre los abundantes restos de mamíferos, se registraron raros casos de anfibios y reptiles, los cuales reportamos a continuación. En la cueva Cement Creek (2860 m de elevación) se encontraron solo unos pocos anuros y un número limitado de serpientes. Mientras que, en la cueva Haystack, a una elevación sustancialmente más baja (2450 m de elevación), se encontraron una salamandra, una mayor cantidad de serpientes y una gran cantidad de restos de lagartos, pero no anuros. Las dos faunas son distintas en su composición en general y, aunque no son diversas ni abundantes en términos de especies o número de restos de fauna, proporcionan un registro único y excepcional de una herpetofauna de alta elevación del Pleistoceno tardío del oeste intermontañoso.
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来源期刊
Western North American Naturalist
Western North American Naturalist 环境科学-生态学
CiteScore
0.90
自引率
16.70%
发文量
39
审稿时长
>36 weeks
期刊介绍: The Western North American Naturalist places neither restriction nor preference on manuscripts within the disciplines of the biological sciences. Each issue treats diverse taxa from the perspectives of various disciplines (e.g., ecology, population dynamics, behavior, systematics, anatomy, and physiology).
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