Early Anthropoid Evolution in South America

南美洲的早期类人猿进化

• 批准号: 9012154
• 负责人: John Fleagle
• 金额: $ 16.43万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012154&HistoricalAwards=false
• 关键词: Early; Anthropoid; Evolution; South; America

Anthropologists tend to overlook the New World monkeys because they are not on the main line of relationship to humans. Nevertheless, they comprise an exciting side branch which provides anthropologists with examples parallel to changes which have taken place in the catarrhine fossil record. The history of New World monkeys is still poorly known, compared with that of other major radiations of higher primates in the eastern hemisphere, and phylogenetic relationships among the relatively distinct groups of platyrrhine fossils are largely unresolved. Until very recently, the entire fossil record for platyrrhines consisted of remains of fewer than thirty individuals. During the past four years, paleontological research in Colombia and Argentina has yielded an abundance of new fossils that may be very important in sorting out these relationships. Further systematic and functional studies of new Argentine fossils will help clarify relationships among modern platyrrhines, and provide additional documentation about their adaptive diversity. The fossils from Argentina have come from two roughly contemporaneous formations, the Santa Cruz and the Pinturas, yet the two formations have different species of monkeys. This project will investigate the extent to which these morphological differences are the result of differences in time, environment, and/or geographical position of the two formations, and the PI will reconstruct the paleoenvironments of these formations. The project will contribute to our understanding of the phylogeny and diversification of New World primates, and permit broader comparisons between those in South America and those on other continents.

人类学家倾向于忽略新世界的猴子，因为它们不在与人类的主要关系中。 然而，它们构成了一个令人兴奋的侧分支，该分支为人类学家提供了与卡他郡化石记录中发生的变化的相似示例。 与东部半球的其他主要灵长类动物的其他主要辐射相比，新世界猴子的历史仍然鲜为人知，而相对不同的铂金化石群之间的系统发育关系在很大程度上尚未得到解决。 直到最近，铂金的整个化石记录还包括少于三十个人的遗体。 在过去的四年中，哥伦比亚和阿根廷的古生物学研究产生了大量的新化石，这些化石对于解决这些关系可能非常重要。 对新阿根廷化石的进一步系统和功能研究将有助于澄清现代铂金之间的关系，并提供有关其自适应多样性的其他文档。 来自阿根廷的化石来自两个大致同时的地层，即圣克鲁斯和平杜拉斯，但两层地层有不同的猴子。 该项目将研究这些形态学差异是两个地层的时间，环境和/或地理位置差异的结果，PI将重建这些地层的古环境。 该项目将有助于我们对新世界灵长类动物的系统发育和多样化的理解，并可以在南美与其他大陆的人们之间进行更广泛的比较。