A new orthide brachiopod genus from the Middle Ordovician of the Alborz Mountains, Iran

被引：2

作者：

Zadeh, Mohammad-Reza Kebria-Ee ^{[1
]}

Popov, Leonid E. ^{[2
]}

Pour, Mansoureh Ghobadi ^{[2
,3
]}

机构：

[1] Payam Noor Univ, Dept Geol, Fac Sci, Tehran, Iran

[2] Natl Museum Wales, Dept Geol, Cardiff, S Glam, Wales

[3] Golestan Univ, Dept Geol, Fac Sci, Gorgan, Iran

来源：

GFF | 2017年 / 139卷 / 04期

关键词：

Brachiopoda; Hesperorthidae; taxonomy; Ordovician; Darriwilian; Iran;

D O I：

10.1080/11035897.2017.1347197

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A new brachiopod genus and species Simehorthis fascicostellata is described from the upper Darriwilian part of the Lashkarak Formation of eastern Alborz in northern Iran. The taxon appears as a minor component of the Saucrorthis Brachiopod Association and later proliferated as a distinct part of a rich brachiopod-echinoderm fauna in the latest Darriwilian. Simehorthis together with Hesperorthis are the only genera of the Family Hesperorthidae yet documented from the Middle Ordovician. Also there was no previous record of the occurrence of Hesperorthidae in association with the Saucrorthis Fauna, and in the Middle Ordovician of the Austrolasian sector of Gondwana and associated terranes, while Hesperorthis was mainly confined to peri-Iapetus locations in the Darriwilian.

引用

页码：327 / 332

页数：6

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