Record details

Title
    Epibionts of mollusc shells from the Korycany limestones (Upper Cenomanian, Czech Republic)
Statement of responsibility
    Jiří Žítt, Marie Kopáčová, Čestmír Nekovařík
Author
    Kopáčová, Marie
    Nekovařík, Čestmír
    Žítt, Jiří
Language
    anglicky
Source title - serial
    Bulletin of geosciences
Vol./nr.
    Vol. 78, no. 1
Pages
    p. 41-52
Year
    2003
Notes
    9 obr., 5 fot., 24 bibl.
    il.
    Zkr. název ser.: Bull. Geosci.
Subject group
    Bivalvia
    cenoman
    česká křídová pánev
    epibiotismus
    Gastropoda
    křída-svrchní
    Mollusca
    otisk vnitřní
    schránky
    tafonomie
    vltavo-berounský faciální vývoj
Geographical name
    ČR-Čechy
    Korycany (Mělník)
Keyword
    Cenomanian
    Czech
    Epibionts
    Korycany
    Limestones
    Mollusc
    Republic
    Shells
    Upper
Abstract (in english)
   Abundant internal moulds of gastropod shells and imprints of bivalve shells were collected from the Korycany limestones (Korycany Member, Late Cenomanian) exposed in the gas-main excavations near Korycany in central Bohemia. The specimens are unique in that they comprise encrusters of inner shell surfaces, preserved after the shells were diagenetically dissolved or otherwise destructed. The preserved cemented component of an encrusting community consists of oysters, worms and bryozoans. In gastropods, predominantly apertural and adjacent parts of inner shell surfaces were colonized. Oysters, often in preferred orientations, prevail on inner surfaces of bivalve shells. A direction of coiling of oyster shells was proved to be a useful tool for a correct interpretation of the original position of encrusters on the host shells.
   Taphonomic and palaeobiological features of the encrusters indicate that the postmortem colonization of mollusc shells was only a short-lasting one, with possible slight environmental disturbances and episodic rapid burials. Later formation of gastropod moulds corresponded with shell dissolution and [Unification rates of the rock. In this connection, two extreme mould types were distinguished with a series of stages in epibiont preservation between them
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012