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

Bogolepova, Olga K. and Donovan, Stephen K. and Harper, David A.T. and Suyarkova, Anna A. and Yakupov, Rustem and Gubanov, Alexander P. (2018) 'New records of brachiopods and crinoids from the Silurian (Wenlock) of the southern Urals, Russia.', GFF., 140 (4). pp. 323-331.

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.

Item Type:Article
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Available under License - Creative Commons Attribution Non-commercial No Derivatives.
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Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution Non-commercial No Derivatives.
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(3472Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1080/11035897.2018.1526210
Publisher statement:© 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.
Date accepted:17 September 2018
Date deposited:02 November 2018
Date of first online publication:31 October 2018
Date first made open access:No date available

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