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Observations of loxocythere (loxocythere) ouyenensis (chapman, 1914) (ostracoda) from the cenozoic of S.E. Australia with comments on species attributed to microcytherura müller, 1894 and hemiparvocythere hartmann, 1982 from Australian and New Zealand ma

Warne, Mark 2004, Observations of loxocythere (loxocythere) ouyenensis (chapman, 1914) (ostracoda) from the cenozoic of S.E. Australia with comments on species attributed to microcytherura müller, 1894 and hemiparvocythere hartmann, 1982 from Australian and New Zealand marine waters, Proceedings of the Royal Society of Victoria, vol. 116, no. 2, pp. 257-264.

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Title Observations of loxocythere (loxocythere) ouyenensis (chapman, 1914) (ostracoda) from the cenozoic of S.E. Australia with comments on species attributed to microcytherura müller, 1894 and hemiparvocythere hartmann, 1982 from Australian and New Zealand marine waters
Author(s) Warne, MarkORCID iD for Warne, Mark orcid.org/0000-0001-5456-191X
Journal name Proceedings of the Royal Society of Victoria
Volume number 116
Issue number 2
Start page 257
End page 264
Publisher Royal Society of Victoria
Place of publication Melbourne, Vic.
Publication date 2004
ISSN 0035-9211
Keyword(s) ostracoda
loxocythere (loxocythere) ouyenensis
microcytherura
hemiparvocythere
cenozoic
Australia
New Zealand
Summary The type material of Loxocythere (Loxocythere) ouyenensis (Chapman, 1914) from mid Cenozoic strata of the Mallee Bore No. 11 in the Murray Basin, S.E. Australia is partially redescribed and refigured. This species belongs to a discrete group of large elongate Cenozoic fossil and living Loxocythere species, the carapaces of which possess sub-rectangular inner margin outlines, and broadly rounded posterior extremities. Some much smaller but otherwise very similarly shaped species, that have previously been placed under the genus Microcytherura (i.e. Microcytherura? peterroyi Yassini and Jones, 1995) or the genus Hemiparvocythere Hartmann, 1982 (i.e. Hemiparvocythere Iagunicola Hartmann, 1982), are also known from marine Cenozoic strata and modern seas of the Australasian region. There is a marked difference in the shape of the inner margin between this group of small Australasian forms and European species of Microcytherura s.s .. The former have broadly rounded posterior inner margins, whilst the latter have acutely rounded posterior inner margins. The latter also usually present posterior extremities located well below mid carapace height. It is here argued that this difference in inner margin shape between smaller Australasian species such as Microcytherura? peterroyi, and European species of Microcytherura s.s ., suggests that there is not a direct phylogenetic relationship between these two species groups.

Language eng
Field of Research 040308 Palaeontology (incl Palynology)
Socio Economic Objective 970104 Expanding Knowledge in the Earth Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2004, Royal Society of Victoria
Persistent URL http://hdl.handle.net/10536/DRO/DU:30002766

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.