Authors / CoAuthors
Riding, J.B. | Helby, R.
Abstract
A Mid Jurassic (late Callovian) suite of marine microplankton is present in the Elang Formation and its equivalents in the Timor Sea, offshore north-western Australia. It includes two genera, Voodooia and Woodinia and eleven species of dinoflagellate cysts which are described as new. The dinoflagellate cyst species are Ctenidodinium ancorum, Ctenidodinium fuscibasilarum, Ctenidodinium planocristatum, Durotrigia magna, Fusiformacysta terniana, Lithodinia protothymosa, Meiourogonyaulax penitabulata, Meiourogonyaulax viriosa, Voodooia tabulata, Woodinia pedis and Yalkalpodinium elangiana. A new acritarch species, Nummus apiculus, is also described. The dinoflagellate cyst genus Fusiformacysta is emended to stress the 3P nature of the archaeopyle and the presence of at least one, small anterior intercalary paraplate. The genera Lithodinia and Meiourogonyaulax are both maintained here, as the opercula are compound and simple respectively. Tabulodinium and its single species, T. senarium, are emended, in order to fully describe this intriguing species, the ornamentation of which is apparently destroyed by oxidation. The genus Yalkalpodium is emended to accommodate the new form Y. elangiana. All these new microplankton taxa have stratigraphical utility in the Wanaea digitata and Rigaudella aemula (interval) zones.
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nonGeographicDataset
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34852
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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- GA PublicationOther Publication
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2000-01-01T00:00:00
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