Echinodermata;
Crinoidea;
taxonomy;
taphonomy;
Late Turonian;
Bohemian Cretaceous Basin;
D O I:
10.3140/bull.geosci.2008.03.311
中图分类号:
P [天文学、地球科学];
学科分类号:
07 ;
摘要:
Crinoid faunas from scour and burrow fills in the basal portions of the Upper Turonian Teplice Formation at the locality Upohlavy, Bohemian Cretaceous Basin (BCB) comprise the bourgueticrinid Bourgueticrinus ex gr. fischeri (Geinitz, 1872) represented by cups, proximalia and columnals and, in contrast, the comatulid Placometra ex gr. laticirra (Carpenter, 1880), new to the BCB, preserved as complete cups. Analysis of articulated portions of arms and dissociated brachials in the assemblages allows specimens to be identified and assigned to Bourgueticrinus ex gr. fischeri?, Placometra ex gr. laticirra?, Placometra? sp. and "Isocrinus" sp. The original echinoderm community also included an indeterminate bourgueticrinid with "rhizocrinid" columnals. Life habits and taphonomy of these crinoids are discussed. The type specimen of Bourgueticrinus fischeri from similar crinoid associations in Saxony is in need of revision.
机构:
Czech Geol Survey, Klarov 3, CZ-11821 Prague, Czech RepublicJohannes Gutenberg Univ Mainz, Inst Geosci, Johann Joachim Becher Weg 21, D-55128 Mainz, Germany
Vodrazka, Radek
Hoeche, Nils
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机构:
Johannes Gutenberg Univ Mainz, Inst Geosci, Johann Joachim Becher Weg 21, D-55128 Mainz, GermanyJohannes Gutenberg Univ Mainz, Inst Geosci, Johann Joachim Becher Weg 21, D-55128 Mainz, Germany
Hoeche, Nils
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机构:
Voigt, Silke
Schoene, Bernd R.
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机构:
Johannes Gutenberg Univ Mainz, Inst Geosci, Johann Joachim Becher Weg 21, D-55128 Mainz, GermanyJohannes Gutenberg Univ Mainz, Inst Geosci, Johann Joachim Becher Weg 21, D-55128 Mainz, Germany