作者: Karen H. Black , Michael Archer , Suzanne J. Hand , Henk Godthelp
DOI: 10.1007/978-90-481-3428-1_35
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摘要: The origins, evolution and palaeodiversity of Australia’s unique marsupial fauna are reviewed. is both taxonomically ecologically diverse comprising four extant orders (Dasyuromorphia, Peramelemorphia, Notoryctemorphia Diprotodontia) one extinct order (Yalkaparidontia). Molecular divergence dates estimate a Palaeocene origin for the Australian yet ordinal differentiation obscured by significant gaps in fossil record with single terrestrial mammal-bearing deposit known between late Cretaceous Oligocene. This deposit, 55 million-year-old early Eocene Tingamarra Local Fauna southeastern Queensland, contains oldest (Superorder Australidelphia) as well taxa tentatively interpreted to represent South American groups (Order Polydolopimorphia). Palaeobiogeographic hypotheses regarding distribution interordinal relationships marsupials discussed. Dasyuromorphia Peramelemorphia were possibly also present Eocene, Diprotodontia at least Oligocene Yalkaparidontia Miocene. Palaeobiodiversity was highest during middle Miocene evidenced spectacular array rainforest assemblages Riversleigh World Heritage Area. onset icehouse conditions saw faunal turnover loss many archaic emergence range modern lineages. Few deposits age known. Development first grasslands arid habitats occurred Pliocene, accompanied an explosive radiation grazing kangaroos. Pleistocene characterised severe unpredictable climatic extinction megafauna. Lowered sea levels allowed interchange mainland Australia neighbouring New Guinea arrival humans. Resolution role humans and/or climate change megafaunal requires more precise dating deposits. We reflect on predictive power enhance understanding effects future fauna.