Universität zu Köln

Friedel, Julia C., Amler, Michael R. W. and Balik, Berna . Bohemicardia hainense (Maurer) revisted: insights into ontogeny and variability of a Devonian hippocardiid rostroconch (Conocardiida: Hippocardiidae). PalZ. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1867-6812

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Abstract

Re-examination of type material and abundant specimens enable the reinstatement of 'Conocardium hainense Maurer, 1885', a species erroneously synonymised with Babinicardia clathrata by Rogalla and Amler. Based on the completely reconstructed morphology, C. hainense can be assigned to the genus Bohemicardia within the Hippocardiidae of the Hippocardioidea. About 600 specimens from a single locality available for study including a wide range of ontogenetic stages allow documentation of allometric growth, with shell width increasing faster than shell height. Protoconchs are not preserved, leaving the development from larval stages to early juveniles unrecorded. The large number of specimens confirms a rather narrow range of morphological variation within the taxon. Based on the preservation of the rarely observed external shell layer, conclusions on shell shape, presence of a hood and external shell ornamentation of the taxon are possible. The material confirms that recognising different shell layer architecture in conocardiid rostroconchs is a prerequisite for specific identification and basic taxonomy.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Friedel, Julia C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Amler, Michael R. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Balik, Berna UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-659761
DOI:	10.1007/s12542-022-00645-3
Journal or Publication Title:	PalZ
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	1867-6812
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MOLLUSCA; REVISION; RUNNEGAR; POJETA Multiple languages Paleontology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/65976