Paleontology and Geochronology of the Middle Miocene of South America

南美洲的中新世地层含有丰富的 化石脊椎动物的地方，包括一个重要的记录 猴子在新世界的进化 理查德·凯博士建议 将他对中新世脊椎动物的成功研究 智利通过在哥伦比亚和阿根廷的实地工作。 拟议 哥伦比亚的研究将提供重要的新信息 关于南美洲热带森林动物群的报告 中新世 他的研究小组将包括几名美国科学家， 专门研究地区和非灵长类动物的地质年代学 化石，以及几个in.country合作者。 建议的跨学科国际研究 该项目将产生广泛的影响。 几个南美 国民将获得最新做法的经验， 地磁地层学和同位素年龄测定。 新的化石 这些发现可能会揭示新物种的进化史。 世界脊椎动物谱系。 这些化石将提供最好的 交换之前南美洲动物群的最新情况 南北美洲之间大约300万年 在巴拿马地峡上升之后。 结果 这一项目将引起考古学家的兴趣， 人类学家、兴趣广泛的地质学家、地理学家、 和进化生物学家

The Miocene strata in South America contain rich deposits of fossil vertebrates in places, including an important record of monkey evolution in the New World. Dr. Richard Kay proposes to expand his successful research on the Miocene vertebrates of Chile through field work in Colombia and Argentina. The proposed research in Colombia will provide important new information concerning the tropical forest fauna of South America during the Miocene. His research team will include several U.S. scientists specializing on geochronology of the regions and non.primate fossils, as well as several in.country collaborators. The proposed inter.disciplinary international research project will have wide implications. Several South American nationals will gain experience in the latest approaches to magneto.stratigraphy and isotopic age dating. New fossil discoveries may shed light on the evolutionary history of New World vertebrate lineages. These fossils will provide the best view to date of the South American fauna prior to the interchange between North and South America approximately 3 millino years ago, following the rise of the Panamanian Isthmus. Results from this project will be of interest to mammalogists, anthropologists, geologists with many interests, biogeographers, and evolutionary biologists.