Plate tectonics, seaways and climate in the historical biogeography of mammals

The marsupial and placental mammals originated at a time when the pattern of geographical barriers (oceans, shallow seas and mountains) was very different from that of today, and climates were warmer. The sequence of changes in these barriers, and their effects on the dispersal of the mammal familie...

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Main Author: C Barry Cox
Format: Article
Language:English
Published: Fundação Oswaldo Cruz (FIOCRUZ) 2000-08-01
Series:Memorias do Instituto Oswaldo Cruz
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762000000400012
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author C Barry Cox
author_facet C Barry Cox
author_sort C Barry Cox
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description The marsupial and placental mammals originated at a time when the pattern of geographical barriers (oceans, shallow seas and mountains) was very different from that of today, and climates were warmer. The sequence of changes in these barriers, and their effects on the dispersal of the mammal families and on the faunas of mammals in the different continents, are reviewed. The mammal fauna of South America changed greatly in the Pliocene/Pleistocene, when the newly-complete Panama Isthmus allowed the North American fauna to enter the continent and replace most of the former South American mammal families. Marsupial, but not placental, mammals reached Australia via Antarctica before Australia became isolated, while rats and bats are the only placentals that dispersed naturally from Asia to Australia in the late Cenozoic. Little is known of the early history of the mammal fauna of India. A few mammal families reached Madagascar from Africa in the early Cenozoic over a chain of islands. Africa was isolated for much of the early Cenozoic, though some groups did succeed in entering from Europe. Before the climate cooled in the mid-Cenozoic, the mammal faunas of the Northern Hemisphere were much richer than those of today.
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spelling doaj.art-841b5bfc347641698af494ec65b574522023-08-02T09:16:34ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz0074-02761678-80602000-08-0195450951610.1590/S0074-02762000000400012Plate tectonics, seaways and climate in the historical biogeography of mammalsC Barry CoxThe marsupial and placental mammals originated at a time when the pattern of geographical barriers (oceans, shallow seas and mountains) was very different from that of today, and climates were warmer. The sequence of changes in these barriers, and their effects on the dispersal of the mammal families and on the faunas of mammals in the different continents, are reviewed. The mammal fauna of South America changed greatly in the Pliocene/Pleistocene, when the newly-complete Panama Isthmus allowed the North American fauna to enter the continent and replace most of the former South American mammal families. Marsupial, but not placental, mammals reached Australia via Antarctica before Australia became isolated, while rats and bats are the only placentals that dispersed naturally from Asia to Australia in the late Cenozoic. Little is known of the early history of the mammal fauna of India. A few mammal families reached Madagascar from Africa in the early Cenozoic over a chain of islands. Africa was isolated for much of the early Cenozoic, though some groups did succeed in entering from Europe. Before the climate cooled in the mid-Cenozoic, the mammal faunas of the Northern Hemisphere were much richer than those of today.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762000000400012biogeographymammal dispersalfaunal change
spellingShingle C Barry Cox
Plate tectonics, seaways and climate in the historical biogeography of mammals
Memorias do Instituto Oswaldo Cruz
biogeography
mammal dispersal
faunal change
title Plate tectonics, seaways and climate in the historical biogeography of mammals
title_full Plate tectonics, seaways and climate in the historical biogeography of mammals
title_fullStr Plate tectonics, seaways and climate in the historical biogeography of mammals
title_full_unstemmed Plate tectonics, seaways and climate in the historical biogeography of mammals
title_short Plate tectonics, seaways and climate in the historical biogeography of mammals
title_sort plate tectonics seaways and climate in the historical biogeography of mammals
topic biogeography
mammal dispersal
faunal change
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762000000400012
work_keys_str_mv AT cbarrycox platetectonicsseawaysandclimateinthehistoricalbiogeographyofmammals