Mediterranean Neocomian belemnites, part 4: belemnites of the Barremian stratotype section
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The Early Evolutionary History of Belemnites: New Data from Japan
Belemnites (Order Belemnitida), a very successful group of Mesozoic coleoid cephalopods, dominated the world's oceans throughout the Jurassic and Cretaceous. According to the current view, the phylogenetically earliest belemnites are known from the lowermost Jurassic (Hettangian, 201-199 Ma) of northern Europe. They are of low diversity and have small sized rostra without clear grooves. Their d...
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ژورنال
عنوان ژورنال: Carnets de géologie (Notebooks on geology)
سال: 2012
ISSN: 1634-0744,1765-2553
DOI: 10.4267/2042/48307