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The First Finds of Representatives of the Order Acrotretida Kuhn from the Frasnian (Upper Devonian) Deposits of Komi Respublic
- Authors: Smirnova T.N.1, Zhegallo E.A.2
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Affiliations:
- Lomonosov Moscow State University
- Borissak Paleontological Institute, Russian Academy of Sciences
- Issue: No 2 (2023)
- Pages: 65-68
- Section: Articles
- URL: https://clinpractice.ru/0031-031X/article/view/673570
- DOI: https://doi.org/10.31857/S0031031X23020137
- EDN: https://elibrary.ru/LENFVD
- ID: 673570
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Abstract
The structure and microstructure of the shell substance Acrotretella sp. on the protegulum, brephic and adult shell. The structure of the secondary layer, represented by interlayers with columnar-lamellar and spherulite structures, is characteristic. Wrinkles are developed along the edges of the shell.
About the authors
T. N. Smirnova
Lomonosov Moscow State University
Author for correspondence.
Email: smirnovatatiana77@mail.ru
Russia, 119991, Moscow
E. A. Zhegallo
Borissak Paleontological Institute, Russian Academy of Sciences
Author for correspondence.
Email: ezheg@paleo.ru
Russia, 117647, Moscow
References
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- Treatise on Invertebrate Paleontology. Pt H. Brachiopoda. Revised. V. 2, 3. Lawrence: Univ. Kansas Press, 2000. 919 p.
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- Williams A., Holmer L. Ornamentation and shell structure of acrotretoid brachiopods // Palaeontology. 1992. V. 35. Pt 3. P. 675–692.
