Earliest upper Barremian (Lower Cretaceous) record of bivalve Pinna (Pinnidae) from the Kopet-Dagh Basin, northeastern Iran and its possible predators

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld Pub Date : 2024-03-18 DOI:10.1016/j.palwor.2024.03.004

引用次数: 0

Abstract

The bivalves Pinna sp. cf. cretacea (Schlotheim, 1813) and Pinna cretacea cretacea (Schlotheim, 1813) are systematically described for the first time from the ammonite-constrained upper Barremian (Lower Cretaceous) strata of the Kopet-Dagh Basin, northeastern Iran. This is also, the first record of the Family Pinnidae from the Kopet-Dagh Basin. The specimens were collected from the basal part of the Sarcheshmeh Formation, exposed in the Bojnurd city, North Khorasan province. Additionally, this study includes observations on predation scars (such as scalloped, embayed, and cleft scars), and encrustations by orbitolinids on the Pinna samples. Insights into the contemporary paleoenvironment, characterized by quiet and shallow waters with a soft, muddy substrate, are also discussed.

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伊朗东北部 Kopet-Dagh 盆地最早的上白垩世（下白垩世）双壳类动物 Pinna (Pinnidae) 记录及其可能的捕食者

(Schlotheim, 1813) 和 (Schlotheim, 1813) 首次在伊朗东北部 Kopet-Dagh 盆地受氨蛋白约束的上巴里米统（下白垩统）地层中系统地描述了双壳类。这也是科佩特-达赫盆地凤蝶科的首次记录。标本采集自北呼罗珊省布伊诺德市出露的萨尔切什梅赫层基底部分。此外，这项研究还包括对捕食疤痕（如扇形疤痕、凹陷疤痕和裂缝疤痕）以及眶鞘类动物在样本上结壳情况的观察。本研究还讨论了对当代古环境的见解，该环境的特点是水域安静、浅，底质松软、泥泞。

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

Palaeoworld PALEONTOLOGY-

CiteScore

4.00

自引率

5.90%

发文量

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