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...

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Bibliographic Details
Main Authors: Mark Warne, Stephen J Gallagher
Format: Other Non-Article Part of Journal/Newspaper
Language:unknown
Published: 2020
Subjects:
Evolutionary Biology
Geology
Ecology
Ostracoda
Cretaceous
marine
Otway Basin
Australia
palaeobiogeography
palaeoceanography
Science & Technology
Life Sciences & Biomedicine
Paleontology
MAJUNGAELLA
GREKOFF
Antarctic
Southern Ocean
The Antarctic
Antarctic Peninsula
New Zealand
Antarc*
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
Description
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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