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

IF 3.5 3区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Acta Geologica Sinica ‐ English Edition Pub Date : 2023-07-12 DOI:10.1111/1755-6724.15092

Hossein KAMYABI SHADAN, Morteza TAHERPOUR KHALIL‐ABAD

引用次数: 0

Abstract

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 species. Sexual 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.

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伊朗东北部Kopet - Dagh盆地早白垩世弓形刺针类异长石性别二态性的首次记录

在伊朗东北部Kopet - Dagh盆地东部Borouj向斜北侧Bahman jan - Bala地层剖面的Tirgan组和Sarcheshmeh组(Barremian-Aptian)的下白垩世灰岩和钙质沉积物中发现了属于Heteraster的Spatangoid棘虫，被认为是一种两性二态物种。两性二态性是棘类动物的共同特征，本文首次在弓形虫科(Toxasteridae)中检测到两性二态性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Geologica Sinica ‐ English Edition 地学-地球科学综合

CiteScore

3.00

自引率

12.10%

发文量

3039

审稿时长

6 months

期刊介绍： Acta Geologica Sinica mainly reports the latest and most important achievements in the theoretical and basic research in geological sciences, together with new technologies, in China. Papers published involve various aspects of research concerning geosciences and related disciplines, such as stratigraphy, palaeontology, origin and history of the Earth, structural geology, tectonics, mineralogy, petrology, geochemistry, geophysics, geology of mineral deposits, hydrogeology, engineering geology, environmental geology, regional geology and new theories and technologies of geological exploration.