Evolution of the early Permian family Paragastrioceratidae (Ammonoidea) in the Urals |
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| Authors: | M S Boiko |
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| Institution: | 1.Borissiak Paleontological Institute,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | This paper discusses the evolution of the Early Permian ammonoid family Paragastrioceratidae in the Urals, with an emphasis
on the terminal Artinskian-Kungurian stage of evolution in this group. New data on the Kungurian members of the family are
discussed. Patterns of morphological and ecological changes of the Uralian paragastrioceratids are analyzed. |
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