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

Author(s): Takemura, Atsushi; Ling, Hsin Yi
Author Affiliation(s): Primary:
Hyogo University of Teacher Education, Geoscience Institute, Hyogo, Japan
Northern Illinois University, United States
Volume Title: Paleontological Research
Source: Paleontological Research, 2(3), p.155-169. Publisher: Palaeontological Society of Japan, Tokyo, Japan. ISSN: 1342-8144 CODEN: TPPJAA
Note: In English. 52 refs.; illus., incl. sketch map
Summary: 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.
Year of Publication: 1998
Research Program: ODP Ocean Drilling Program
Key Words: 10 Paleontology, Invertebrate; Atlantic Ocean; Biostratigraphy; Cenozoic; Circum-Antarctic region; Correlation; Eocene; Indian Ocean; Invertebrata; Leg 114; Leg 120; New taxa; Ocean Drilling Program; Oligocene; Paleogene; Phylogeny; Protista; Radiolaria; Range; Revision; Taxonomy; Tertiary; Theocorys; Theocorys kerguelensis; Theocorys minuta; Theocorys robusta; Theocorys saginata; Theocorys semipolita
Coordinates: S515905 S465245 E0075341 W0330558
S584302 S544838 E0811426 E0762427
Record ID: 1999038019
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