The Early Callovian genus Сadochamoussetia (Ammonoidea, Cardioceratidae) in the lower reaches of the Anabar River, Northern Central Siberia

статья в журнале
Авторы: Kniazev V.G.     Meledina S.V.   (ИНГГ СО РАН)   Alifirov A.S.   (ИНГГ СО РАН)   Nikitenko B.L.   (ИНГГ СО РАН)  
дата публикации: 2017
The species Cadochamoussetia aff. subpatruus (Nik.), Cadochamoussetia surensis (Nik.), and Cadoceras cf. simulans Spath are found for the first time in the lower reaches of the Anabar River. The first two species are characteristic of the Lower Callovian Cadochamoussetia subpatruus Subzone of Central Russia, which is equivalent to the Siberian Cadochamoussetia tschernyschewi Zone. Species of the genus Cadochamoussetia, found for the first time in the Arctic, are described. Shells of Siberian representatives of Cadochamoussetia are distinguished from the typical East European species by their larger umbilicus, which is similar to that of the ancestral genus Cadoceras. It is suggested that the Siberian taxa belong to the oldest representatives of this genus, which appeared in the early Callovian Arctic seas and later migrated to seas of Central Europe and England.
первоисточник: Stratigraphy and Geological Correlation
том: 4
страницы: 385-399
внешние ссылки:
WoS   WoS (цитирование)






полный текст статьи