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.

About the authors

T. N. Smirnova

Moscow State University

Author for correspondence.
Email: smirnovatatiana76@bk.ru
Russian Federation, Moscow, 119992

G. T. Ushatinskaya

Borissiak Paleontological Institute, Russian Academy of Sciences

Author for correspondence.
Email: gushat@paleo.ru
Russian Federation, Moscow, 117647

E. A. Zhegallo

Borissiak Paleontological Institute, Russian Academy of Sciences

Author for correspondence.
Email: ezheg@paleo.ru
Russian Federation, Moscow, 117647

I. V. Panchenko

“Federal State Budgetary Institution “All-Russian Research Geological Oil Institute

Author for correspondence.
Email: ivpanchenko89@gmail.com
Russian Federation, Moscow, 105118


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