First Record of Sexual Dimorphism in Toxasterid Echinoid Heteraster from the Early Cretaceous Deposits of the Kopet-Dagh Basin,NE Iran

作     者：Hossein KAMYABI SHADAN Morteza TAHERPOUR KHALIL-ABAD Hossein KAMYABI SHADAN;Morteza TAHERPOUR KHALIL-ABAD

作者机构：Exploration Directorate of the National Iranian Oil CompanyTehranIran Young Researchers and Elite ClubMashhad BranchIslamic Azad UniversityMashhadIran 

出 版 物：《地质学报:英文版》 (Acta Geologica Sinica(English Edition))

年 卷 期：2023年第97卷第5期

页      面：1318-1334页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 

基　　金：The authors appreciate the hard work and help of our friends in the Geological Survey of Iran North East Territory(GSINET) especially Dr.Jafar Taheri.The authors are especially grateful for the linguistic helps and efforts of Susan Turner(Brisbane) 

主　　题：invertebrate paleontology echinodermata Heteraster sexual dimorphism Barremian–Aptian Kopet-Dagh Iran 

摘      要：Spatangoid echinoids belonging to Heteraster found in the Lower Cretaceous limestones and calcareous deposits of the Tirgan and Sarcheshmeh formations(Barremian-Aptian)in the Bahman jan-Bala stratigraphic section on the northern flank of the Borouj syncline,situated in the eastern Kopet-Dagh Basin,northeastern Iran are assessed as a sexually dimorphic *** dimorphism is a common feature in echinoids and,in this study of Heteraster renngarteni Poretzkaja,1961,sexual dimorphism has been detected for the first time in the family Toxasteridae.