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

<italic>The new material of conulariids is described from the mid-Sheinwoodian “Miraspis Limestone” at the famous Špičatý vrch locality near Loděnice in the Barrandian area. Although poorly preserved, three taxa have been determined, referred to the</italic> Archaeoconularia <italic>cf.</italic> fecunda <italic>(Barrande, 1855)</italic>, Conularia proteica <italic>Barrande, 1854 and</italic> Metaconularia <italic>(?) sp.</italic>
</abstract>

Conulariids of the <italic>Monograptus Belophorus</italic> Zone (Motol Formation, Sheinwoodian, Wenlock) of the Barrandian Area, Czech Republic

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

<italic>As yet undescribed accumulations of shells of orthoconic cephalopods, which are in some aspects comparable to cephalopod limestones known from the Silurian and Lower Devonian of the Barrandian area and other regions of the world, occur in the Letná and Zahořany formations (middle Sandbian and lower Katian stages, Upper Ordovician, central Bohemia). These accumulated shells are often colonized by sessile organisms. Only a small proportion of these organisms could be attached to shells of alive cephalopods; the majority of them used empty shells as solid substrates. The most abundant epizoan is the cystosporate bryozoan of the genus</italic> Ceramopora <italic>that often overgrows the cephalopod shells extensively. Holdfasts of the genus</italic> Sphenothallus <italic>and problematic fossils assigned to the genus</italic> Conchicolites <italic>are common. Rarer epibionts include the bryozoan</italic> Spatiopora, <italic>the cystoid echinoderm</italic> Codiacystis <italic>and the brachiopod</italic> Ptychopeltis. <italic>Varying sizes of bryozoan colonies occurring on the same cephalopod shell point to several recurring attachment events, probably reflecting reproduction cycles.</italic>
</abstract>

Accumulations of Fossil Cephalopod Shells and Attached Epizoans from Some Late Ordovician Localities (Barrandian Area, Czech Republic)

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

<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>
</abstract>

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

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Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica

 Folia Musei rerum naturalium Bohemiae occidentalis - Geologica et Paleobiologica is an journal publishing original research papers, regionally oriented, review articles, longer contributions focused on palaeoenvironmental geology, systematic palaeontology, stratigraphy, sedimentology, palaeogeography, palaeoecology, and palaeoclimatology. Long data rich manuscripts as well as short informative manuscripts are accepted. Survey of primary data sets, measurements, etc. useful for subsequent analyses are also welcome. All papers are subject to peer review, and acceptance is based on quality alone.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica

Volume 57 (2023): Issue 1-2 (December 2023)

Conulariids of the Monograptus Belophorus Zone (Motol Formation, Sheinwoodian, Wenlock) of the Barrandian Area, Czech Republic

Accumulations of Fossil Cephalopod Shells and Attached Epizoans from Some Late Ordovician Localities (Barrandian Area, Czech Republic)

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

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