<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>In the middle Sandbian and lower Katian (Upper Ordovician) rocks of the Barrandian area, the fossil remains of conulariids are relatively abundant. Their thecae were sometimes used as solid surfaces for the attachment of epizoans, mostly craniid brachiopods of the genus</italic> Petrocrania, <italic>more rarely also echinoderms</italic> Hemicystites <italic>and</italic> Agelacrinites, <italic>and bryozoans</italic> Ceramopora <italic>and</italic> Spatiopora. <italic>The orientation of shells of</italic> Petrocrania <italic>suggests that conulariids (mostly belonging to the genus</italic> Archaeconularia) <italic>were dead at the time of the brachiopod attachment, their thecae were partly fragmentary and secondarily replaced. A find of</italic> Pseudoconularia grandissima <italic>attached to the theca of the cystoid</italic> Codiacystis <italic>is also reported.</italic></p>
</abstract>

In the middle Sandbian and lower Katian (Upper Ordovician) rocks of the Barrandian area, the fossil remains of conulariids are relatively abundant. Their thecae were sometimes used as solid surfaces for the attachment of epizoans, mostly craniid brachiopods of the genus Petrocrania, more rarely also echinoderms Hemicystites and Agelacrinites, and bryozoans Ceramopora and Spatiopora. The orientation of shells of Petrocrania suggests that conulariids (mostly belonging to the genus Archaeconularia) were dead at the time of the brachiopod attachment, their thecae were partly fragmentary and secondarily replaced. A find of Pseudoconularia grandissima attached to the theca of the cystoid Codiacystis is also reported.

Organisms Attached to Conulariid Thecae from the Upper Ordovician of the Barrandian Area (Czech Republic)

Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

In the middle Sandbian and lower Katian (Upper Ordovician) rocks of the Barrandian area, the fossil remains of conulariids are relatively abundant. Their...

Organisms Attached to Conulariid Thecae from the Upper Ordovician of the Barrandian Area (Czech Republic)

Publié en ligne: 19 mai 2024

Pages: 43 - 50

DOI: https://doi.org/10.2478/fbgp-2023-0003

Mots clés
Epizoa, brachiopods, bryozoans, cystoids, Sandbian, Katian, Zahořany Formation, Letná Formation

© 2023 Jaroslav Marek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Organisms Attached to Conulariid Thecae from the Upper Ordovician of the Barrandian Area (Czech Republic)

Publié en ligne: 19 mai 2024

Pages: 43 - 50

DOI: https://doi.org/10.2478/fbgp-2023-0003

Mots clésEpizoa, brachiopods, bryozoans, cystoids, Sandbian, Katian, Zahořany Formation, Letná Formation

© 2023 Jaroslav Marek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
Epizoa, brachiopods, bryozoans, cystoids, Sandbian, Katian, Zahořany Formation, Letná Formation