Record details

Title
    Palaeoecology and palaeogeographic relations of the Silurian phragmoceratids (Nautiloidea, Cephalopoda) of the Prague Basin (Bohemia)
Other titles
    Paleoekologie a paleogeografické vztahy silurských phragmoceratidů (Nautiloida, Cephalopoda) pražské pánve (Čechy)
Author
    Manda, Štěpán
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Bulletin of Geosciences
Vol./nr.
    Roč. 83, č. 1
Pages
    24
Year
    2008
Thesaurus term
    Silurian, Nautiloidea, Phragmoceras, migration, palaeoecology, peri-Gondwana, Perunica, Prague Basin
Keyword
    Basin
    Bohemia
    Cephalopoda
    Nautiloidea
    Palaeoecology
    Palaeogeographic
    Phragmoceratids
    Prague
    Relations
    Silurian
Abstract (in czech)
   Viz anglický abstrakt.
Abstract (in english)
   Phragmoceras and Tubiferoceras are discosorid nautiloid genera with endogastric cyrtoconic to orthoconic breviconic shells possessing a contracted aperture. Due to the constricted aperture phragmoceratids have been usually considered as microphages. Nevertheless, the constriction of aperture appears during the late ephebic stage and preceding ontogenetic stages possessed a brevicone shell with an open aperture, usually considered to be indicative of nectobenthic predatory lifestyle. The apertural constriction probably improved hydrodynamic control and served as protection for soft body. Attachment sites of distinct retractor muscles give an evidence of potentially fast movement of the head-arm complex out of the aperture and the capture of larger prey.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014