<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Problematic phosphatic sclerites Eurytholia are reported for the first time from the Middle Devonian. Unequivocal sclerites were observed in limestones of Emsian to late Eifelian age in six localities of the Barrandian area of the Central Bohemia of the Czech Republic. Formerly observed size and shape variations of Eurytholia sclerites prevent formal description of a new species on few specimens of Emsian and Eifelian age. Therefore the new specimens are identified as Eurytholia aff. bohemica. Their presence indicates longer time range of the Eurytholia animal, covering not only the Ordovician, the Silurian and the earliest Devonian as known formerly, but also late Lower Devonian and the Middle Devonian. Similar features in morphology and histology of Eurytholia indicate relationship to a conodont Pseudooneotodus and a support suggestion about the vertebrate origin of Eurytholia sclerites.</p></abstract>

Problematic phosphatic sclerites Eurytholia are reported for the first time from the Middle Devonian. Unequivocal sclerites were observed in limestones of Emsian to late Eifelian age in six localities of the Barrandian area of the Central Bohemia of the Czech Republic. Formerly observed size and shape variations of Eurytholia sclerites prevent formal description of a new species on few specimens of Emsian and Eifelian age. Therefore the new specimens are identified as Eurytholia aff. bohemica. Their presence indicates longer time range of the Eurytholia animal, covering not only the Ordovician, the Silurian and the earliest Devonian as known formerly, but also late Lower Devonian and the Middle Devonian. Similar features in morphology and histology of Eurytholia indicate relationship to a conodont Pseudooneotodus and a support suggestion about the vertebrate origin of Eurytholia sclerites.

Problematic Sclerites Eurytholia from the Lower and Middle Devonian of the Czech Republic

Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Problematic phosphatic sclerites Eurytholia are reported for the first time from the Middle Devonian. Unequivocal sclerites were observed in limestones of...

Problematic Sclerites Eurytholia from the Lower and Middle Devonian of the Czech Republic

Published Online: Jul 27, 2020

Page range: 1 - 11

DOI: https://doi.org/10.2478/fbgp-2019-0001

Keywords
problematica, vertebrata, Eifelian, Emsian, Devonian, Barrandian area, Czech Republic

© 2020 Michal Mergl, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Problematic Sclerites Eurytholia from the Lower and Middle Devonian of the Czech Republic

Published Online: Jul 27, 2020

Page range: 1 - 11

DOI: https://doi.org/10.2478/fbgp-2019-0001

Keywordsproblematica, vertebrata, Eifelian, Emsian, Devonian, Barrandian area, Czech Republic

© 2020 Michal Mergl, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
problematica, vertebrata, Eifelian, Emsian, Devonian, Barrandian area, Czech Republic