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New records of brachiopods and crinoids from the Silurian (Wenlock) of the southern Urals, Russia

Bogolepova, Olga K.; Donovan, Stephen K.; Harper, David A.T.; Suyarkova, Anna A.; Yakupov, Rustem; Gubanov, Alexander P.

New records of brachiopods and crinoids from the Silurian (Wenlock) of the southern Urals, Russia Thumbnail


Authors

Olga K. Bogolepova

Stephen K. Donovan

Anna A. Suyarkova

Rustem Yakupov

Alexander P. Gubanov



Abstract

Crinoids and brachiopods are described from the Silurian Uzyan Formation of the Zilair Zone in the southern Urals. The occurrence of the graptolites Coronograptus praedeubeli suggests a late Homerian (Wenlock) age for the strata. A new disparid crinoid, Cicerocrinus gracilis Donovan sp. nov., is the oldest known member of this genus. It has a long, flexible and homeomorphic column, and a tall bryozoan palaeontology terminology (IBr2) (second primibrachial) axillary. All species of Cicerocrinus described previously have been limited to the Ludlow of the British Isles, Sweden and Estonia, and the Pridoli of Estonia. The poorly preserved brachiopod fauna is represented by small atrypid (Atrypa? sp.) and dalmanellid brachiopods (Levenea? sp.). The reported assemblage generally inhabited deep-water environments.

Citation

Bogolepova, O. K., Donovan, S. K., Harper, D. A., Suyarkova, A. A., Yakupov, R., & Gubanov, A. P. (2018). New records of brachiopods and crinoids from the Silurian (Wenlock) of the southern Urals, Russia. GFF, 140(4), 323-331. https://doi.org/10.1080/11035897.2018.1526210

Journal Article Type Article
Acceptance Date Sep 17, 2018
Online Publication Date Oct 31, 2018
Publication Date Oct 31, 2018
Deposit Date Nov 2, 2018
Publicly Available Date Nov 2, 2018
Journal GFF
Print ISSN 1103-5897
Electronic ISSN 2000-0863
Publisher Taylor and Francis Group
Peer Reviewed Peer Reviewed
Volume 140
Issue 4
Pages 323-331
DOI https://doi.org/10.1080/11035897.2018.1526210

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Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright Statement
Advance online version © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.




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