Collection of Early Cretaceous Mammals and other Microvertebrates, Utah

犹他州早期白垩纪哺乳动物和其他微型脊椎动物收藏

• 批准号: 9401094
• 负责人: Richard Cifelli
• 金额: $ 13.95万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-15 至 1998-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9401094&HistoricalAwards=false
• 关键词: Collection; Early; Cretaceous; Mammals; other

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.

9401094 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提议，该遗址可追溯到白垩纪早期。现有收藏中的化石并不能很好地代表这一时期，而雪松山化石动物群是众所周知的丰富。该项目将产生对古生态和生物地理研究极具兴趣的数据，因为晚侏罗世和晚白垩世的动物群发生了戏剧性的变化，在雪松山动物群之前和之后的时期。这些变化被认为是在这一跨度期间开花植物起源的结果。这些藏品将为评估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对比假说提供基础。雪松山组的动物群还将补充犹他州晚白垩世以来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、形态和成分变化。