Early Pliocene Ostracoda from the Jemmys Point Formation, Gippsland Basin, southeastern Australia: nearshore and offshore origins of biodiversity

被引:1
|
作者
McDonald, Abbey P. [1 ]
Weldon, Elizabeth A. [1 ,2 ]
Warne, Mark T. [1 ,2 ,3 ]
机构
[1] Deakin Univ, Sch Life & Environm Sci, Burwood, Vic 3125, Australia
[2] Deakin Univ, Deakin Marine Res & Innovat Ctr, Burwood, Vic 3125, Australia
[3] Museums Victoria, GPO Box 666, Melbourne, Vic 3001, Australia
来源
ALCHERINGA | 2024年 / 48卷 / 02期
关键词
Ostracoda; upwelling; early Pliocene; southeastern Australia; taxonomy; MIOCENE; VICTORIA; NEOGENE; MARINE; RECORD; FAUNAS;
D O I
10.1080/03115518.2024.2347505
中图分类号
Q91 [古生物学];
学科分类号
0709 ; 070903 ;
摘要
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 origins. 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 modern ostracod faunas from the Bass Strait region, evidence the adaptation of deep shelf taxonomic 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.Abbey P. McDonald* [a.mcdonald@deakin.edu.au], School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia;Elizabeth A. Weldon [l.weldon@deakin.edu.au], School of Life and Environmental Sciences and Deakin Marine Research and Innovation Centre, Deakin University, Burwood, Victoria 3125, Australia;Mark T. Warne [mark.warne@deakin.edu.au], School of Life and Environmental Sciences and Deakin Marine Research and Innovation Centre, Deakin University, Burwood, Victoria 3125, Australia, and Museums Victoria, GPO Box 666, Melbourne, Victoria 3001, Australia.
引用
收藏
页码:338 / 383
页数:46
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