کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6448407 1642072 2014 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Late Albian ammonites from the Aitamir Formation (Koppeh Dagh, northeast Iran)
ترجمه فارسی عنوان
آمونیت های اواخر آلبی از سازند آیتامیر (کپه داغ، شمال شرقی ایران)
کلمات کلیدی
کرتاسه اولیه، تجزیه و تحلیل سیستماتیک، بیواستراتیگرافی، پالای بیوگرافی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
چکیده انگلیسی
Late Albian ammonite faunas from the Aitamir Formation of the Koppeh Dagh Basin in northeast Iran are described and illustrated. These comprise 14 taxa, several of which are recorded from Iran for the first time, namely Anahoplites planus (formerly recorded from central Iran in open nomenclature only), Semenoviceras solidus, Epihoplites (Metaclavites) iphitus, Hysteroceras orbignyi and Pseudhelicoceras robertianum. New records of Placenticeras grossouvrei extend the stratigraphic range of this species downwards into the Late Albian; previously it was known from the Early and Middle Cenomanian only. The record of the rare E. (M.) iphitus fills a palaeobiogeographic gap between Crimea and Tajikistan, and the holotype of Spath is re-illustrated here. Additionally, Epihoplites trapezoidalis, from the Late Albian of Tajikistan, is relegated into the synonymy of Spath's species. A large number of taxa typical of the Late Albian (upper part of the Gault Clay Formation) of northwest Europe indicate close palaeobiogeographic affinities with the Koppeh Dagh Basin and faunal exchange across the Russian Platform and Transcaspia. The stratigraphic succession of the ammonite faunas is used for a biostratigraphic subdivision of the upper Aitamir Formation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 50, July 2014, Pages 72-88
نویسندگان
, , ,