Palaeoecological implications of neoselachian shark teeth from the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland

Czasopismo : Acta Geologica Polonica
Tytuł artykułu : Palaeoecological implications of neoselachian shark teeth from the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland

Autorzy :
Gedl, P.
Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland, ndgedl@cyf-kr.edu.pl,
Leonowicz, P.
Institute of Geology, University of Warsaw, Al. Żwirki i Wigury 93, PL-02-089 Warszawa, Poland, Paulina.Leonowicz@uw.edu.pl,
Dudek, T.
Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, PL-31-002 Kraków, Poland, tereska_wing@yahoo.co.uk,
Witkowska, M.
Institute of Geological Sciences, Jagiellonian University, Oleandry 2a, PL-30-063 Kraków, Poland, magda.witkowsky@interia.pl,
Gedl, P.
Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland, ndgedl@cyf-kr.edu.pl,
Boczarowski, A.
Faculty of Earth Sciences, University of Silesia, Będzińska 60, PL-41-200 Sosnowiec, Poland, a.boczarowski@chello.pl,
Kaim, A.
Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland ; Bayerische Staatssammlung fur Palaontologie und Geologie, Richard-Wagner-Str. 10, 80333 Munchen, Germany, kaim@twarda.pan.pl,
Kaim, A.
Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland ; Bayerische Staatssammlung fur Palaontologie und Geologie, Richard-Wagner-Str. 10, 80333 Munchen, Germany, kaim@twarda.pan.pl,
Rees, J.
Soldattorpet 48, SE-653 50 Karlstad, Sweden,
Abstrakty : Systematic sampling through the Middle and Upper Bathonian strata at Gnaszyn has resulted in the discovery of 13 neoselachian teeth. Systematically, the teeth represent five taxa including Sphenodus sp., Protospinax sp. 1, Protospinax sp. 2, Palaeobrachaelurus sp. and another, indeterminate orectolobiform. The presence of two species of the flattened and bottom-dwelling Protospinax and two different orectolobiforms that are likely to have lived near the bottom, is a strong indication of oxygenated bottom conditions at the time of deposition. The dietary preferences of these taxa included a wide variety of benthic invertebrates. The synechodontiform Sphenodus may have been the first pelagic predatory neoselachian in the Jurassic, equipped with high and slender piercing teeth that formed a tearing-type dentition. The diet of Sphenodus probably included bony fish, smaller sharks and cephalopods.

Słowa kluczowe : Baton, Gnaszyn, jura, monoklina śląsko-krakowska, paleoekologia, Polska, Bathonian, Gnaszyn, Jurassic, Kraków-Silesia Homocline, Neoselachii, Palaeoecology, Poland,
Wydawnictwo : Faculty of Geology of the University of Warsaw
Rocznik : 2012
Numer : Vol. 62, no. 3
Strony : 397 – 402
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DOI :
Cytuj : Gedl, P. ,Leonowicz, P. ,Dudek, T. ,Witkowska, M. ,Gedl, P. ,Boczarowski, A. ,Kaim, A. ,Kaim, A. ,Rees, J. , Palaeoecological implications of neoselachian shark teeth from the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland. Acta Geologica Polonica Vol. 62, no. 3/2012
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