A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia

Ericusa ngayawang sp. nov. is described from shells preserved in the Middle Miocene Cadell Formation in the western Murray Basin of South Australia. At the time the Murray Basin was part of the Southeastern Australian Marine Biogeographic Province. Ericusa ngayawang is a small heavily costate specie...

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Main Author: Adam M. Yates
Format: Article
Language:English
Published: PeerJ Inc. 2022-10-01
Series:PeerJ
Subjects:
Online Access:https://peerj.com/articles/14197.pdf
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author Adam M. Yates
author_facet Adam M. Yates
author_sort Adam M. Yates
collection DOAJ
description Ericusa ngayawang sp. nov. is described from shells preserved in the Middle Miocene Cadell Formation in the western Murray Basin of South Australia. At the time the Murray Basin was part of the Southeastern Australian Marine Biogeographic Province. Ericusa ngayawang is a small heavily costate species of Ericusa with clear affinities to the Early Miocene E. atkinsoni of Victoria and Tasmania but can be distinguished from it by its smaller size, more slender proportions and its heavily costate body whorl. Ericusa atkinsoni and its relative, E. macroptera, inhabited the basins to the east of the Murray Basin during the Late Oligocene and Early Miocene but were extinct there before the end of the Burdigalian Stage of the Early Miocene. The persistence of E. ngayawang into the Langhian Stage of the Middle Miocene is another piece of evidence for partial biogeographic isolation of the western Murray Basin from the rest of the Southeastern Australian Province during the Miocene.
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spelling doaj.art-87845b87db6f473b87be3e97db980a2d2023-12-03T06:51:45ZengPeerJ Inc.PeerJ2167-83592022-10-0110e1419710.7717/peerj.14197A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South AustraliaAdam M. YatesEricusa ngayawang sp. nov. is described from shells preserved in the Middle Miocene Cadell Formation in the western Murray Basin of South Australia. At the time the Murray Basin was part of the Southeastern Australian Marine Biogeographic Province. Ericusa ngayawang is a small heavily costate species of Ericusa with clear affinities to the Early Miocene E. atkinsoni of Victoria and Tasmania but can be distinguished from it by its smaller size, more slender proportions and its heavily costate body whorl. Ericusa atkinsoni and its relative, E. macroptera, inhabited the basins to the east of the Murray Basin during the Late Oligocene and Early Miocene but were extinct there before the end of the Burdigalian Stage of the Early Miocene. The persistence of E. ngayawang into the Langhian Stage of the Middle Miocene is another piece of evidence for partial biogeographic isolation of the western Murray Basin from the rest of the Southeastern Australian Province during the Miocene.https://peerj.com/articles/14197.pdfVolutidaeMurray basinMioceneCadell formationSouth AustraliaSoutheast Australian Province
spellingShingle Adam M. Yates
A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia
PeerJ
Volutidae
Murray basin
Miocene
Cadell formation
South Australia
Southeast Australian Province
title A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia
title_full A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia
title_fullStr A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia
title_full_unstemmed A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia
title_short A new volute, Ericusa ngayawang sp. nov. (Gastropoda: Volutidae), from the Miocene of South Australia
title_sort new volute ericusa ngayawang sp nov gastropoda volutidae from the miocene of south australia
topic Volutidae
Murray basin
Miocene
Cadell formation
South Australia
Southeast Australian Province
url https://peerj.com/articles/14197.pdf
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