Record details

    Gradual opening of the siphonal tube in an orthoconic cephalopod from the Silurian of Central Bohemia (Czech Republic)
Statement of responsibility
    Ivan Kolebaba
Other titles
    Postupné otvírání sifonální trubice u ortokonního hlavonožce ze siluru středních Čech
    Kolebaba, Ivan
Source title - serial
    Journal of the Czech Geological Society
    Vol. 44, no. 1-2
    p. 131-136
    2 obr., 2 pl., 11 bibl.
    České resumé
    Zkr. název ser.: J. Czech geol. Soc.
Subject group
    morfologie funkční
    nový taxon
Geographical name
Abstract (in english)
   A specimen of an orthoconic cephalopod from the Silurian (Ludlow, Ludfordian), Kopanina Formation of Central Bohemia, described by Barrande (1870) as Orthoceras obelus, has been studied in detail. New information was obtained on the morphology of the sipho-cameral structure; the gradual opening of the siphonal tube, enabling the tissue to enter the gas chambers during the ontogeny, has been found out. The specimen was established the holotype of a new species Nucleoceras hollandi sp.n., and was, based on the proved presence of the cameral mantle, attributed to the Family Lamellorthoceratidae Teichert, 1961, Order Pallioceratida Marek, 1998
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    19. 2. 2008
Import date
    8. 8. 2012