Podrobnosti záznamu

Název
    Probable ancestral type of actinodont hinge in the Ordovician bivalve Pseudocyrtodonta Pfab, 1934
Autor
    Steinová, Marika
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Bulletin of Geosciences
Svazek/č.
    Roč. 87, č. 2
Strany
    14
Rok
    2012
Výraz tezauru
    Bivalvia, Actinodontida,Cycloconchidae, Pseudocyrtodonta, Ordovician, Bohemia, systematics, palaeoecology
Klíčové slovo
    1934
    Actinodont
    Ancestral
    Bivalve
    Hinge
    Ordovician
    Pfab
    Probable
    Pseudocyrtodonta
    Type
Abstrakt (anglicky)
   The type species of Pseudocyrtodonta, P. ala and other two species P. incola, P. obtusa are known from the Middle and Upper Ordovician of the Prague Basin, Bohemia. Because of the actinodont type of the hinge, Pseudocyrtodonta is excluded from the subclass Protobranchia and is transferred to the Autobranchia, family Cycloconchidae. The family Pseudocyrtodontidae is considered invalid. Early and Middle Ordovician Cycloconchidae were highly diversified, containing 24 genera. Their diversity suddenly decreased during the Upper Ordovician to three genera only. The hinge of Pseudocyrtodonta could be considered morphologically close to the ancestral type of the hinge of the actinodonts. A complete species list of Ordovician actinodonts, including schematic figures of their hinge for the most important genera is presented. Pseudocyrtodonta was most probably an active burrower.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014