Number of the records: 1
Early Cretaceous ribbed aptychi - a proposal for a new systematic classification
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SYSNO ASEP 0345974 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Early Cretaceous ribbed aptychi - a proposal for a new systematic classification Author(s) Měchová, L. (CZ)
Vašíček, Zdeněk (UGN-S) RID
Houša, Václav (GLU-S) SAI, RIDNumber of authors 3 Source Title Bulletin of Geosciences. - : Česká geografická společnost - ISSN 1214-1119
Roč. 85, č. 2 (2010), s. 219-274Number of pages 55 s. Publication form www - www Language eng - English Country CZ - Czech Republic Keywords Late Jurassic ; J/K boundary ; Early Cretaceous ; aptychi Subject RIV DB - Geology ; Mineralogy CEZ AV0Z30860518 - UGN-S (2005-2011) AV0Z30130516 - GLU-S (2005-2011) UT WOS 000279347300003 DOI 10.3140/bull.geosci.1162 Annotation The older system for classification of ribbed calcareous Early Cretaceous aptychi consisted of two genera: Punctaptychus and Lamellaptychus. Later, I. Turculet divided Lamellaptychus into several subgenera. Within the framework of both the genera, species and subspecies were distinguished, which resulted in binominal and trinominal nomenclature. With regard to the richness of newly described species and subspecies in recent years, is not possible to continue using the original system. It is the basic ribbing that plays the decisive role in the generic and subgeneric classification of ribbed aptychi. In the case of subspecies systematics, all details on the valve surface are used with the exception of the sigmoidal bend (fractocostatus) and radial lines (radiatus). The ribbed aptychi are newly divided into the following families: Punctaptychidae fam. nov. and Lamellaptychidae fam. nov. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2011
Number of the records: 1