McDonald, A. P.; Weldon, E. A.; Warne, M. T. (2024). Early Pliocene Ostracoda from the Jemmys Point Formation, Gippsland Basin, southeastern Australia: nearshore and offshore origins of biodiversity. Alcheringa: An Australasian Journal of Palaeontology. 48(2): 338-383.

492252

10.1080/03115518.2024.2347505 [view]

McDonald, A. P.; Weldon, E. A.; Warne, M. T.

2024

48(2): 338-383

Publication

Available for editors   [request]

Early Pliocene ostracod faunas of the Jemmys Point Formation, onshore Gippsland Basin, yield a rich and well-preserved marine ostracod fauna of mixed shallow marine and deep marine ori?gins. The ostracod faunas evidence a marine continental shelf palaeoenvironment that, during the deposition of one stratigraphic interval, was influenced by a strong, persistent upwelling current. This upwelling current allowed the migration of deep-sea Ostracoda (Philoneptunus sp.) onto the continental shelf. The deeper marine aspect of this early Pliocene fauna, and of mod?ern ostracod faunas from the Bass Strait region, evidence the adaptation of deep shelf taxo?nomic clades to shallow cool temperate shelf environments and highlights one unusual evolutionary mechanism that has contributed to modern Bass Strait shallow marine biodiversity. Four species are newly described: Neonesidea chapminuta sp. nov., Tasmanocypris salaputia sp. nov., Oculocytheropteron jemmyensis sp. nov., and Philoneptunus plutonis sp. nov.

Australia

Systematics, Taxonomy

Ostracoda

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