New record of some marine Jurassic gastropods from Kutch, India

IF 1.5 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld Pub Date : 2026-02-01 Epub Date: 2025-09-20 DOI:10.1016/j.palwor.2025.201027

Sandip Saha , Shiladri S. Das , Subhronil Mondal , Subhendu Bardhan

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引用次数: 0

Abstract

Previous systematic studies on the Middle to Late Jurassic marine gastropods from the Kutch Basin, western India, revealed 138 species of 62 genera. The present paper describes 12 more species, of which eight are new. The new species are Discohelix ravii n. sp., Metriomphalus (Metriomphalus) bhanu n. sp., Eucyclus jadsaensis n. sp., Buckmanina bhakriensis n. sp., Proconulus jhikadiensis n. sp., Ataphrus (Endianaulax) dhosaensis n. sp., Purpurina mahalanobisi n. sp., and Aptyxiella bajocensis n. sp. Three taxa are retained in open nomenclature, i.e., Hayamia sp., Procerithium sp. 1, and Procerithium sp. 2. This is also the first report of the genera Buckmanina and Aptyxiella in the Jurassic of the basin. The newly recognized fauna increases our understanding of Indian Jurassic gastropods, expands the diversity of the gastropod faunas, and contributes to the palaeobiogeographical distribution of the assemblage in the Jurassic of the Southern Hemisphere.

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印度库奇一些海相侏罗纪腹足类动物的新记录

对印度西部Kutch盆地中晚侏罗世海相腹足类动物进行了系统研究，共发现62属138种。本文介绍了另外12种，其中8种是新发现的。新种为dishelix ravii n. sp、Metriomphalus (Metriomphalus) bhanu n. sp、Eucyclus jadsaensis n. sp、Buckmanina bhakriensis n. sp、Proconulus jhikadiensis n. sp、Ataphrus (Endianaulax) dhosaensis n. sp、Purpurina mahalanobisi n. sp、Aptyxiella bajocensis n. sp。3个分类群（Hayamia sp.、Procerithium sp. 1、Procerithium sp. 2）保留开放命名。这也是该盆地侏罗系首次报道巴克曼纳属和阿普特希拉属。新认识的区系增加了我们对印度侏罗纪腹足类动物的认识，扩大了腹足类动物的多样性，有助于确定南半球侏罗纪的古生物地理分布。

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来源期刊

Palaeoworld PALEONTOLOGY-

CiteScore

4.00

自引率

5.90%

发文量

期刊介绍： Palaeoworld is a peer-reviewed quarterly journal dedicated to the study of past life and its environment. We encourage submission of original manuscripts on all aspects of palaeontology and stratigraphy, comparisons of regional and global data in time and space, and results generated by interdisciplinary investigations in related fields. Some issues will be devoted entirely to a special theme whereas others will be composed of contributed articles. Palaeoworld is dedicated to serving a broad spectrum of geoscientists and palaeobiologists as well as serving as a resource for students in fields as diverse as palaeobiology, evolutionary biology, taxonomy and phylogeny, geobiology, historical geology, and palaeoenvironment. Palaeoworld publishes original articles in the following areas: •Phylogeny and taxonomic studies of all fossil groups •Biostratigraphy, chemostratigraphy, chronostratigraphy •Palaeoecology, palaeoenvironment and global changes throughout Earth history •Tempo and mode of biological evolution •Biological events in Earth history (e.g., extinctions, radiations) •Ecosystem evolution •Geobiology and molecular palaeobiology •Palaeontological and stratigraphic methods •Interdisciplinary studies focusing on fossils and strata