Albian–Cenomanian echinoids from areas north of Bandar Abbas and south of Fars in the Zagros Mountains, Iran

IF 1.9 3区地球科学 Q1 GEOLOGY

Cretaceous Research Pub Date : 2024-10-12 DOI:10.1016/j.cretres.2024.106021

Hossein Gholamalian , Mohamad Kazem Kamali , David A. Wood

引用次数: 0

Abstract

Fossil echinoids have rarely been described from Iran. This study focuses on the echinoid fauna found in the Cretaceous strata (Kazhdumi Formation) of the Geno and Gerash sections in the Bandar Abbas and Fars areas of the Zagros Mountains, southern Iran. The age of the Kazhdumi Formation in both sections is determined to be Albian-Cenomanian based on the associated ammonites and microfauna, its stratigraphic position, and previous studies on this formation. Twenty-one echinoid species (twelve regular and nine irregular) belonging to seventeen genera were described in this study. Fourteen of these species are reported for the first time from Iran. In addition, a new diadematoid echinoid species, Arabicodidema jafariani sp. nov. is introduced. New age ranges are proposed for Pliotoxaster comanchei and Lambertiaster douvillei. The paleogeographic position of the Zagros Basin in the Tethyan realm is confirmed based on the distribution of the index species.

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伊朗扎格罗斯山脉阿巴斯港以北和法尔斯以南地区的阿尔卑斯-乾隆年代回声类动物

伊朗很少有关于回声类化石的描述。本研究的重点是在伊朗南部扎格罗斯山脉 Bandar Abbas 和 Fars 地区 Geno 和 Gerash 地段的白垩纪地层（Kazhdumi 地层）中发现的回声虫动物群。根据相关的棘皮动物和微型动物、其地层位置以及以前对该地层的研究，这两个地段的卡兹杜米地层被确定为阿尔卑斯-仙人掌纪。本研究描述了属于 17 个属的 21 个回声虫物种（12 个规则物种和 9 个不规则物种）。其中 14 个物种是首次在伊朗发现。此外，还介绍了一个新的双齿类回声虫物种--Arabicodidema jafariani sp.nov.。此外，还为 Pliotoxaster comanchei 和 Lambertiaster douvillei 提出了新的年代范围。根据索引物种的分布情况，确认了扎格罗斯盆地在泰提安地区的古地理位置。

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

Cretaceous Research 地学-地质学

CiteScore

4.10

自引率

19.00%

发文量

235

审稿时长

12 weeks

期刊介绍： Cretaceous Research provides a forum for the rapid publication of research on all aspects of the Cretaceous Period, including its boundaries with the Jurassic and Palaeogene. Authoritative papers reporting detailed investigations of Cretaceous stratigraphy and palaeontology, studies of regional geology, and reviews of recently published books are complemented by short communications of significant new findings. Papers submitted to Cretaceous Research should place the research in a broad context, with emphasis placed towards our better understanding of the Cretaceous, that are therefore of interest to the diverse, international readership of the journal. Full length papers that focus solely on a local theme or area will not be accepted for publication; authors of short communications are encouraged to discuss how their findings are of relevance to the Cretaceous on a broad scale. Research Areas include: • Regional geology • Stratigraphy and palaeontology • Palaeobiology • Palaeobiogeography • Palaeoceanography • Palaeoclimatology • Evolutionary Palaeoecology • Geochronology • Global events.