Reticulotaberina n. gen. jahrumiana n. sp., a new soritoidean (Praerhapydioninidae) from the Eocene of Iran

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE Pub Date : 2019-12-01 DOI:10.1016/j.revmic.2019.100382

Elham Nafarieh , Lorenzo Consorti , Ebrahim Ghasemi-Nejad , Esmeralda Caus

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引用次数: 3

Abstract

A new porcelaneous larger benthic foraminifer, Reticulotaberina jahrumiana new genus and new species, from the latest middle Eocene shallow-water carbonate platform deposits of SW Iran (Jahrum Formation, Zagros Mountains) is described. Its structure is characterized by the development of a thin alveolar layer (exoskeleton) in the marginal area of the chamber lumen and by septula and interseptal pillars (endoskeleton) in the central area. The septula build a network, whereas the interseptal pillars rise from its intersections. The intercameral foramina are concentrically arranged and are intercalated with septula. R. jahrumiana n. sp. displays a strong dimorphism: A-form has a planispiral-uncoiling subcylindrical morphology, whereas the B-form presents a flared shape with oval or compressed outline. The new taxon is included in the Praerhapydioninidae family and is so far known from the south-west of Iran. The age is late Bartonian.

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伊朗始新世一新种(拟拟蝗科)

报道了伊朗西南部中始新世晚期浅水碳酸盐岩台地沉积(Zagros山脉Jahrum组)中一种新的瓷质大型底栖有孔虫Reticulotaberina jahrumiana新属新种。其结构的特点是在腔腔的边缘区域有一个薄的肺泡层(外骨骼)，在中央区域有隔膜和间隔柱(内骨骼)。隔膜形成一个网络，而隔膜柱从它的交叉处升起。膜间孔同心排列，内嵌隔。jahrumiana n. sp.表现出强烈的二态性:a型具有平螺旋-展开的亚圆柱形形态，而b型呈现椭圆形或压缩轮廓的爆发形状。这个新分类群属于prahapydionidae科，迄今为止在伊朗西南部已知。这是一个晚期的巴顿时代。

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来源期刊

REVUE DE MICROPALEONTOLOGIE PALEONTOLOGY-

CiteScore

2.50

自引率

0.00%

发文量

期刊介绍： La Revue de micropaléontologie publie 4 fois par an des articles de intérêt international, consacrés à tous les aspects de la micropaléontologie. Les textes, en anglais ou en français, sont des articles originaux, des résultats de recherche, des synthèses et mises au point, des comptes rendus de réunions scientifiques et des analyses de ouvrages. La revue se veut résolument ouverte à tous les aspects de la micropaléontologie en accueillant des travaux traitant de la systématique des microfossiles (et de leurs équivalents actuels), des bactéries aux microrestes de vertébrés, et de toutes leurs applications en sciences biologiques et géologiques.