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Mergl, 2024

Endolithic Microborings in Corals from the Acanthopyge Limestone (Middle Devonian, Eifelian; Barrandian Area; Czech Republic)

Mergl, M.
DOI
DOI10.2478/fbgp-2024-0003
Year2024
JournalFolia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica
Volume58
Number2
Pages17-27
Typearticle in journal
LanguageEnglish
Id51967

Abstract

Three types of microborings are described on corallites of auloporid corals from the Acanthopyge Limestone, Choteč Formation, Middle Devonian (Eifelian) of Central Bohemia. Straight unbranched galleries and swellings of Irhopalia isp. are interpreted as being produced by a phototroph, likely a chlorophyte. Two other rare ichnospecies likely represent sponge borings ( Entobia ? isp., Dendrina ? isp.). The microborings are preserved by the hydrated iron oxide mineral casts after pyrite fillings. The perfect three-dimensional preservation of the microborings represents an alternative for the resin casting method, which cannot be used in solid limestone, where the microborings are filled by precipitated calcium carbonate.

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