Collection of Early Cretaceous Mammals and other Microvertebrates, Utah

[401094] Cifelli这是一项从犹他州雪松山地层收集哺乳动物和小型脊椎动物的建议，该遗址可追溯到早白垩纪时期。这一时期在现有的化石收藏中没有很好的代表，而雪松山的化石动物群是已知的丰富的。该项目将为古生态学和生物地理学的研究提供极大兴趣的数据，因为晚侏罗世和晚白垩纪的动物群发生了巨大的变化，雪松山动物群代表了之前和之后的时期。这些变化被认为是这一时期开花植物起源的结果。这些藏品将为评价关于哺乳动物和其他微脊椎动物的起源、古生物地理学和系统发育的不同假设提供基础。雪松山组的动物群也将补充来自犹他州晚白垩纪的相对完整的组合序列，以记录陆地生物群在其历史的关键阶段的长期分类、形态和组成变化。

9401094 Cifelli This is a proposal to collect mammals and small vertebrates from the Cedar Mountain formation of Utah, a site known to date from the Early Cretaceous period. This time period is not well represented by fossils in existing collections, and the Cedar Mountain fossil fauna is known to be rich. The project will yield data to great interest for studies of paleoecology and biogeography because dramatic changes have occurred in the faunas of the Late Jurassic and Late Cretaceous, the periods preceding and following that represented by the Cedar Mountain fauna. These changes are presumed to be a result of the origin of flowering plants during this span. The collections will provide a basis for evaluation of contrasting hypotheses on the origin, paleobiogeography, and phylogeny of mammals and other microvertebrates. The fauna of the Cedar Mountain Formation will also complement a relatively complete sequence of assemblages from the Late Cretaceous of Utah for documenting long-term taxonomic, morphologic, and compositional changes in the terrestrial biota during a critical phase of its history.