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Article: A highly diverse bivalve fauna from a Bithynian (Anisian, Middle Triassic) Tubiphytes‐microbial buildup in North Dobrogea (Romania)

Papers in Palaeontology - Volume 7 Issue 1 - Cover
Publication: Palaeontology
Volume: 7
Part: 1
Publication Date: Febuary 2021
Page(s): 447 495
Author(s): Evelyn Friesenbichler, Michael Hautmann, Eugen Grădinaru, and Hugo Bucher
DOI: 10.1002/spp2.1286
Addition Information

How to Cite

FRIESENBICHLER, E., HAUTMANN, M., GRăDINARU, E., BUCHER, H. 2021. . Papers in Palaeontology, 7, 1, 447-495. DOI: /doi/10.1002/spp2.1286

Author Information

  • Evelyn Friesenbichler - Paläontologisches Institut und Museum University of Zurich Karl‐Schmid‐Strasse 4 8006 Zurich Switzerland
  • Michael Hautmann - Paläontologisches Institut und Museum University of Zurich Karl‐Schmid‐Strasse 4 8006 Zurich Switzerland
  • Eugen Grădinaru - Department of Geology Faculty of Geology & Geophysics University of Bucharest Bd. Bălcescu Nicolae 1 RO‐010041 Bucharest Romania
  • Hugo Bucher - Paläontologisches Institut und Museum University of Zurich Karl‐Schmid‐Strasse 4 8006 Zurich Switzerland

Publication History

  • Issue published online: 08 March 2021
  • Manuscript Accepted: 17 June 2019
  • Manuscript Received: 01 October 2018

Funded By

Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii. Grant Number: PNCDI‐II-ID‐1960/009‐2010
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung. Grant Number: 200021 162402/1

Online Version Hosted By

Wiley Online Library
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Abstract

This paper describes a rich bivalve fauna from the Tubiphytes‐Limestone Member (Bithynian, early middle Anisian) of the Caerace Formation in North Dobrogea (Romania). We report 51 bivalve species, including 7 new species and 2 new genera: Atrina multicostata sp. nov., Pinna simionescui sp. nov., Chlamys (Praechlamys) prima sp. nov., Entolium reticulatum sp. nov., Scythentolium anisicum sp. nov., Romaniamya mahmudiaensis gen. et sp. nov. and Praedicerocardium vetulus gen. et sp. nov. The latter taxon represents the oldest Triassic megalodontoid. We provide detailed descriptions of the bivalve fauna, discuss the ecology and compare species richness in the Early and Middle Triassic, showing that the bivalve assemblage of North Dobrogea is much more diverse than all previously described Early Triassic bivalve faunas, but not as rich as several faunas from the late Anisian and Ladinian. The relative richness of the Dobrogea fauna with respect to geologically older and younger faunas suggests that it represents an early stage of the main rediversification of bivalves after the end‐Permian mass extinction.

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