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Shell Microstructure and Relief of the Primary Layer of the Late Jurassic Discinisca (Class Lingulata, Family Discinidae)

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Abstract

The organophosphatic-shelled brachiopod Discinisca sp. is first described from the Upper Jurassic of Northwestern Siberia. Its relief and microstructure of outer and inner sides of dorsal brephic and adult valves are described. Discinisca sp. differs from other Mesozoic discinids in the primary layer with concentric relief structures.

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Funding

This paper was supported by the RAS Presidium Program no. 17 “Evolution of organic world. Importance and impact of planetary processes” (subprogramme I “Development of vital and biospheric processes”), Russian Foundation for Basic Research, project no. 19-04-01027, and Russian Ministry of Higher Education and Science.

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Authors and Affiliations

  1. Moscow State University, 119992, Moscow, Russia

    T. N. Smirnova

  2. Borissiak Paleontological Institute, Russian Academy of Sciences, 117647, Moscow, Russia

    G. T. Ushatinskaya & E. A. Zhegallo

  3. “Federal State Budgetary Institution “All-Russian Research Geological Oil Institute, 105118, Moscow, Russia

    I. V. Panchenko

Authors
  1. T. N. Smirnova
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  2. G. T. Ushatinskaya
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  3. E. A. Zhegallo
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  4. I. V. Panchenko
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Corresponding authors

Correspondence to T. N. Smirnova, G. T. Ushatinskaya, E. A. Zhegallo or I. V. Panchenko.

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Translated by A. Madison

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Smirnova, T.N., Ushatinskaya, G.T., Zhegallo, E.A. et al. Shell Microstructure and Relief of the Primary Layer of the Late Jurassic Discinisca (Class Lingulata, Family Discinidae). Paleontol. J. 53, 482–487 (2019). https://doi.org/10.1134/S0031030119050113

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  • DOI: https://doi.org/10.1134/S0031030119050113

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