Taxonomy and phylogeny of the genus Theocorys (Nassellaria, Radiolaria) from the Eocene and Oligocene sequences in the Antarctic region

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概要

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• Taxonomic and phylogenetic investigations were carried out on the Eocene and Oligocene radiolarians assignable to the genus Theocorys from submarine sections of the Southern Indian and Southern Atlantic Oceans. Several well-preserved theoperid species previously described under the genera Calocyclas, Cyrtocapsella or Theocorys are now grouped into Theocorys, and their phylogenetic relationships are discussed. Five species are described, of which three are proposed as new. They are : T. kerguelensis sp. nov., T. minuta sp. nov., T. saginata sp. nov., T. robusta comb. nov. and T. semipolita comb. nov. In addition, another new species, Calocyclas (?) nakasekoi, is described.

• 日本古生物学会の論文
• 1998-09-30

著者

• Ling H

  Department Of Geology Northern Illinois University

• Ling Hsin

  Department Of Geology Northern Illinois University

• Takemura Atsushi

  Geoscience Institute, Hyogo University of Teacher Education

• Takemura A

  Geoscience Institute Hyogo University Of Teacher Education

• Takemura Atsushi

  Geoscience Institute Hyogo University Of Teacher Education

関連論文

• Basaltic sheet intruding into Middle-Late Permian pelagic sedimentary rocks at Arrow Rocks, Waipapa Terrane, North Island, New Zealand
• The enclosing latticed sphere of Tuscaridium cygneum (Murray), a eurybathyal phaeodarian Radiolaria, from the North Pacific
• Taxonomy and phylogeny of the genus Theocorys (Nassellaria, Radiolaria) from the Eocene and Oligocene sequences in the Antarctic region
• Tectonic significance of Eocene and Cretaceous radiolaria from South Andaman Island, northeast Indian Ocean

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