Palaeobiogeographical affinities and palaeoceanographical significance of late Cretaceous Ostracoda (Crustacea) from Voluta-1, Otway Basin, southeastern Australia
A continental shelf to upper continental slope ostracod fauna is documented from the late Cretaceous (late Turonian to Santonian) Belfast Mudstone in Voluta-1 of the Otway Basin, southeastern Australia. The fauna has palaeobiogeographical affinities with mid-late Cretaceous ostracod faunas of Wester...
Main Authors: | , |
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Format: | Other Non-Article Part of Journal/Newspaper |
Language: | unknown |
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2020
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Online Access: | http://hdl.handle.net/10536/DRO/DU:30144930 https://figshare.com/articles/journal_contribution/Palaeobiogeographical_affinities_and_palaeoceanographical_significance_of_late_Cretaceous_Ostracoda_Crustacea_from_Voluta-1_Otway_Basin_southeastern_Australia/20684494 |
Summary: | A continental shelf to upper continental slope ostracod fauna is documented from the late Cretaceous (late Turonian to Santonian) Belfast Mudstone in Voluta-1 of the Otway Basin, southeastern Australia. The fauna has palaeobiogeographical affinities with mid-late Cretaceous ostracod faunas of Western Australia, New Zealand, the Antarctic Peninsula and the Falklands Plateau. This distribution pattern probably reflects dispersal influenced by the opening of the Australo-Antarctic Gulf, and by clockwise gyre currents in the proto Southern Ocean. The presence of Philoneptunus sp. in this fauna suggests that the Australo-Antarctic Gulf was an important locus for deep sea colonization by Gondwanan neritic ostracod clades. |
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