THE MIDDLE/UPPER MIOCENE DISPERSAL OF MAJOR RODENT GROUPS BETWEEN SOUTHERN ASIA AND AFRICA

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概要

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• Two families of southern Asian rodents dispersed into Africa during the middle Miocene and three during the upper Miocene. Advanced cricetids and ctenodactylids dispersed through Saudi Arabia into north Africa (and East for cricetids) prior to 14Ma. Murids immigrated into north and East Africa, and rhizomyids into East Africa, prior to 11Ma. During the latter part of the upper Miocene, hystricids dispersed from southern Asia to East Africa. The only major group that emigrated from Africa to southern Asia during the middle Miocene is the Thryonomyidae : one taxon reached Pakistan by 16Ma, and another by 13Ma. Dispersal of rodent taxa is coincident with movements of other taxonomic groups and with sea-level drops at 16.5-15Ma, 13.8-10Ma, and during the Messinian Salinity Crisis around the Miocene/Pliocene boundary. Although the Thryonomyidae were not successful immigrants into southern Asia (they are now extinct, and were a rare component of the fauna, so far as known), the impact of southern Asian immigrants into Africa was tremendous : two groups, the murids and cricetids, now dominate (in abundance and diversity) African rodent faunas.

• 国立科学博物館の論文

著者

• Winkler Alisa

  Shuler Museum Of Paleontology Southern Methodist University:department Of Cell Biology And Neuroscie

関連論文

• THE MIDDLE/UPPER MIOCENE DISPERSAL OF MAJOR RODENT GROUPS BETWEEN SOUTHERN ASIA AND AFRICA

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