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Article: A review of the evolution, biostratigraphy, provincialism and diversity of Middle and early Late Triassic conodonts

Papers in Palaeontology - Volume 2 Part 2 - Cover
Publication: Palaeontology
Volume: 2
Part: 2
Publication Date: May 2016
Page(s): 235 263
Author(s): Yanlong Chen, Leopold Krystyn, Michael J. Orchard, Xu‐Long Lai, and Sylvain Richoz
DOI: 10.1002/spp2.1038
Addition Information

How to Cite

CHEN, Y., KRYSTYN, L., ORCHARD, M.J., LAI, X., RICHOZ, S. 2016. A review of the evolution, biostratigraphy, provincialism and diversity of Middle and early Late Triassic conodonts. Papers in Palaeontology, 2, 2, 235-263. DOI: 10.1002/spp2.1038

Author Information

  • Yanlong Chen - University of Graz NAWI Graz Institute of Earth Sciences Graz Austria (Email: yanlong.chen@edu.uni-graz.at)
  • Leopold Krystyn - Vienna University Institute for Palaeontology Vienna Austria (Email: leopold.krystyn@univie.ac.at)
  • Michael J. Orchard - Natural Resources Canada – Geological Survey of Canada Vancouver BC Canada (Email: mike.orchard@canada.ca)
  • Xu‐Long Lai - China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology Wuhan Hubei 430074 China (Email: xllai@cug.edu.cn)
  • Sylvain Richoz - University of Graz NAWI Graz Institute of Earth Sciences Graz Austria (Email: sylvain.richoz@uni-graz.at)

Publication History

  • Manuscript Accepted: 22 October 2015
  • Manuscript Received: 15 June 2015

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Abstract

The taxonomy, diversity, evolutionary lineages, and stratigraphical distributions of Middle and early Late Triassic conodonts are reviewed and re‐evaluated. Twenty‐five genera are recognized in the Middle and early Late Triassic, including a new genus cited in open nomenclature. Of these, 24 genera are assigned to two families and seven subfamilies. The family Gondolellidae consists of the subfamilies Cornudininae, Epigondolellinae, Neogondolellinae, Novispathodinae, Paragondolellinae and Pseudofurnishiinae. The family Gladigondolellidae is monotypic, consisting of the subfamily Gladigondolellinae. The genus Neostrachanognathus is not assigned to any family or subfamily as its origin is unclear. Conodont provincialism was low in the early Anisian, but from the late Anisian faunistic differences started to increase and became stronger during the early Ladinian, reaching a peak around the mid‐Ladinian. Provincialism remained strong until the earliest Carnian and changed to an all‐Triassic low in the early Tuvalian. The provincialism between North America and Tethys rebounded on the specific level during the late Tuvalian. Diversities on generic and specific levels have been established, and two major conodont diversity cycles are recognized: the first ranges from the Bithynian (early Anisian) to the Julian (late early Carnian), and the second is restricted to the Tuvalian (late Carnian).

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