Palaeobiogeographical affinities and palaeoceanographical significance of late Cretaceous Ostracoda (Crustacea) from Voluta-1, Otway Basin, southeastern Australia

• 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

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.