期刊
PALAEONTOLOGISCHE ZEITSCHRIFT
卷 85, 期 1, 页码 83-89出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s12542-010-0073-x
关键词
Procyonidae; Fossil; Milk teeth; Cyonasua; South America
类别
资金
- CONICET
- ANPCyT
- UNLP
The first record of milk teeth of South American fossil procyonids comes from the Late Miocene-Early Pliocene at Farola Monte Hermoso, Buenos Aires Province, Argentina. Five extant genera of Procyonidae inhabit South America (Bassaricyon Allen, Nasuella Hollister, Potos Geoffroy Saint-Hilaire and Cuvier, Procyon Storr, and Nasua Storr). Of these only Procyon and Nasua are present in the fossil record (Late Pleistocene-Holocene), in several localities in Brazil, Uruguay, and Bolivia. In addition, six other fossil genera were named, but only two are considered valid: Cyonasua and Chapadmalania. Thus, Cyonasua encompasses ten formally named species and Chapadmalania two. The new specimen, MLP 09-X-5-1, is assigned to cf. Cyonasua. In addition, anatomical evidence implies a much more carnivorous diet in Late Miocene-Early Pleistocene procyonids than that of extant South American taxa. Finally, I examine and discuss the competitive displacement hypothesis regarding the extinction of native marsupial carnivores after the arrival of immigrant placental carnivores in South America.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据