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Diversity Patterns of Late Jurassic Chondrichthyans: New Insights from a Historically Collected Hybodontiform Tooth Assemblage from Poland

  • Here, we provide a detailed taxonomic reassessment of a historically collected chondrichthyan dental assemblage from the lower Kimmeridgian of Czarnogłowy in north-western Poland and discuss its significance for better understanding hybodontiform diversity patterns prior to their post-Jurassic decline in fully marine environments. In spite of its low taxonomic diversity, consisting of four large-toothed taxa (viz., Strophodus udulfensis, Asteracanthus ornatissimus, Planohybodus sp. and cf. Meristodonoides sp.), this assemblage is remarkable in that there are only very few Mesozoic hybodontiform assemblages with more large-toothed genera or even species. Comparisons with other European Late Jurassic hybodontiform-bearing localities demonstrate fairly homogenous distribution patterns characterized by large-bodied epipelagic forms of high dispersal ability. This is in stark contrast to post-Jurassic hybodontiform associations, which are dominated by smaller species that were predominantly bound to marginal marine and continental waters, suggesting a major reorganization of chondrichthyan communities during the Early Cretaceous.

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Author: Sebastian Stumpf, Stefan Meng, Jürgen Kriwet
Parent Title (English):Diversity
Place of publication:Basel
Editor: Michael Wink, Eric Buffetaut
Document Type:Article
Date of first Publication:2022/01/26
Release Date:2022/07/05
Tag:Chondrichthyes; Hybodontiformes; Kimmeridgian; Late Jurassic; Poland; biogeography; diversity
GND Keyword:-
Article Number:85
Page Number:18
Faculties:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geographie und Geologie
Licence (German):License LogoCreative Commons - Namensnennung