Počet záznamů: 1

Early Cretaceous ribbed aptychi - a proposal for a new systematic classification

  1. 1.
    0345974 - UGN-S 2011 RIV CZ eng J - Článek v odborném periodiku
    Měchová, L. - Vašíček, Zdeněk - Houša, Václav
    Early Cretaceous ribbed aptychi - a proposal for a new systematic classification.
    Bulletin of Geosciences. Roč. 85, č. 2 (2010), s. 219-274 ISSN 1214-1119
    Výzkumný záměr: CEZ:AV0Z30860518; CEZ:AV0Z30130516
    Klíčová slova: Late Jurassic * J/K boundary * Early Cretaceous * aptychi
    Kód oboru RIV: DB - Geologie a mineralogie
    Impakt faktor: 1.202, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0187125