Late Cenozoic mammals from northwestern Mexico
Late Cenozoic mammals from northwestern Mexico
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来自墨西哥西北部的新生代晚期哺乳动物
DOI：
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发表时间：
1984
期刊：
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通讯作者：
E. Lindsay
中科院分区：
文献类型：
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作者：
E. Lindsay
在墨西哥西北部晚新生代沉积物中发现了10种地理上受限制的脊椎动物。在墨西哥西北部10个晚新生代动物群中，有27个哺乳动物属的奇瓦瓦州Hemphillian Yepomera动物群和有23个哺乳动物属的索诺拉州Irvingtonian El Golfo动物群是最多样化和最可靠的。目前已知的墨西哥西北部Hemphillian（上新世早期）脊椎动物记录表明，马和环状啮齿类动物的数量和多样性，并表明在美洲大交流之前，墨西哥是这些哺乳动物群体的多样性中心。
ABSTRACT Ten geographically restricted vertebrate faunas are recognized in late Cenozoic deposits of northwestern Mexico. The late Hemphillian Yepomera fauna of Chihuahua with 27 mammal genera and the Irvingtonian El Golfo of Sonora with 23 mammal genera are the most diverse and most securely placed in a temporal framework among the ten late Cenozoic faunas of northwestern Mexico. The presently known Hemphillian (early Pliocene) vertebrate record of northwestern Mexico indicates an abundance and diversity of both horses and cricetid rodents, and suggests a center of diversificacion for these mammal groups in Mexico prior to the Great American Interchange.