Late Cretaceous-Early Tertiary Land Mammal Faunas, Bolivia

研究包括继续和扩大跨学科的国际(美国-法国-玻利维亚)古生物学计划，以记录脊椎动物的进化，特别是哺乳动物的进化，在晚白垩世(马斯特里赫特)时代的El Molino组和玻利维亚中南部的马斯特里赫斯和/或古新世的圣卢西亚组。Tiupampa的El Molino组的动物群拥有惊人的丰富的分类群数量和标本数量和质量--到目前为止，哺乳动物有600多个标本，包括大约500个孤立的牙齿，60个部分有牙齿的下巴，4个部分骨骼，4个完整和4个部分头骨。这些标本总共代表了至少20种兽类哺乳动物，包括11种有袋类动物和9种胎盘动物。在这些有袋类动物中，有最早的南美洲记录的是Peradectidae，Didelphidae，MicroBiotheriidae，Caroloameghiniidae和Borhyaenidae，以及南美洲唯一的Proteutheria，Pantodonta，和毫无疑问的mioClaenine hyopsodontid Condylarthra。事实证明，Tiupampa哺乳动物对于了解许多有争议的方面(并引发新的争议)非常重要，这些方面涉及南美洲特别是西半球早期新生代哺乳动物群体的生物地理史和系统发育关系。P.I.将：1)收集更多的化石；2)勘探更多的地点(包括坎帕尼亚时代的Chauanaca组)；3)准备手头的化石和其他待收集的化石；4)模具和铸造类型以及重要标本，分发给世界各地感兴趣的同事和其他研究机构；以及5)研究和发布结果。

Research involves the continuation and expansion of an interdisciplinary-international (US-French-Bolivian) paleontological program to document vertebrate evolution, particularly of mammals, in the Late Cretaceous (Maestrichtian) age El Molino Formation and Maestrichtian and/or Paleocene age Santa Lucia Formation in southcentral Bolivia. The fauna from the El Molino Formation at Tiupampa is spectacularly rich in both number of taxa and number and quality of specimens--thus far the mammals are represented by over 600 specimens, including about 500 isolated teeth, 60 partial jaws with teeth, four partial skeletons, four complete and four partial skulls. Collectively these specimens represent at least 20 species of therian mammals, including 11 marsupials and 9 placentals. Among the marsupials are the earliest South American records of the families Peradectidae, Didelphidae, Microbiotheriidae, Caroloameghiniidae, and Borhyaenidae; and the only South American records of Proteutheria, Pantodonta, and undoubted mioclaenine hyopsodontid Condylarthra. The Tiupampa mammals are proving of great importance for understanding many debated aspects (and creating new controversies) about the biogeographic histories and phylogenetic relationships of early Cenozoic age mammal groups in South America in particular and in the Western Hemisphere in general. P.I. will: 1) collect additional fossils; 2) prospect additional sites (including the Campanian age Chauanaca Formation); 3) prepare fossils in hand and others to be collected; 4) mold and cast type and important specimens for distribution to interested colleagues and other research institutions around the world; and 5) study and publish the results.