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Sylvain Richoz

Sylvain Richoz

Senior lecturer

Sylvain Richoz

Eoconusphaera hallstattensis sp. nov. and a review of the Rhaetian genus Eoconusphaera

Author

  • Isaline Demangel
  • Sylvain Richoz
  • Silvia Gardin
  • Richard Howe

Summary, in English

The genus Eoconusphaera is among the few calcareous nannofossil genera that occur in the Upper Triassic. The calcareous nannofossil assemblages of three Rhaetian sections––two from the Austrian Northern Calcareous Alps and one from offshore north-western Australia––were studied using scanning electron and/or transmitted-light microscopy. Significant structural differences were observed in the inner structures of conical Rhaetian forms belonging to Eoconusphaera, which prompted a revision of Eoconusphaera zlambachensis and the description of a
new species, E. hallstattensis sp. nov.

Publishing year

2021

Language

English

Pages

77-87

Publication/Series

Journal of Nannoplankton Research

Volume

39

Issue

1

Document type

Article

Topic

  • Geology

Keywords

  • Calcareous nannofossils
  • Upper Triassic
  • Rhaetian
  • Nannoliths
  • Coccoliths
  • Eoconusphaera zlambachensis
  • Eoconusphaera hallstattensis
  • Tethys Ocean

Status

Published

Project

  • The emergence of pelagic calcification in the Upper Triassic and their impact on biogeochemical cycles

ISBN/ISSN/Other

  • ISSN: 1210-8049