当前位置: X-MOL 学术Cretac. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A diversified Ostracoda (Crustacea) assemblage from the Upper Cretaceous intertrappean beds of Gujri, Dhar District, Madhya Pradesh, India
Cretaceous Research ( IF 1.9 ) Pub Date : 2021-02-25 , DOI: 10.1016/j.cretres.2021.104784
Deepak Singh Kshetrimayum , Varun Parmar , Ranjit Singh Lourembam , Guntupalli V.R. Prasad

Two new non-marine ostracod species, named Gomphocythere testudo sp. nov. and Candona phaseolus sp. nov. are described from the intertrappean beds exposed near Gujri village in District Dhar, Madhya Pradesh, Central India along with common Deccan intertrappean ostracod species Cyclocypris sahnii, Cypria cyrtonidion, Paracypretta jonesi, Periosocypris megistus and Stenocypris cylindrica. Presence of five other ostracod taxa, viz., Frambocythere tumiensis anjarensis, Gomphocythere strangulata, G. paucisulcatus, Zonocypris gujaratensis and Eucypris intervolcanus documented earlier from this locality are also present in our sample. Barring the two new taxa, the other ten species are also known to occur in coeval intertrappean and infratrappean beds of eastern, central, southern and western parts of the Deccan volcanic province. A Maastrichtian age is inferred for the fossiliferous horizon based on the ostracod fauna. Biostratinomical assessment of ostracod assemblages was carried out followed by palaeoecological and palaeoenvironmental analyses. The presence of non-marine ostracods in association with terrestrial vertebrate remains, gastropods, and charophytes favours a freshwater depositional environment for the Gujri intertrappean beds and do not provide any evidence for the prevalence of supposed marine conditions along the Narmada lineament in the latest Cretaceous.



中文翻译:

来自印度中央邦Dhar区Gujri的上白垩纪圈闭层中的多种Ostracoda(甲壳纲)组合

两种新的非海洋类兽类物种,名为Gomphocythere testudo sp。十一月 和坎多纳菜豆。十一月 从印度中部中央邦Dhar区Gujri村附近露出的圈套床中,以及常见的Deccan圈套蛇形纲Cyclocypris sahniiCypria cyrtonidionParacypretta jonesiPeriosocypris megistusStenocypris cylindrica来描述。存在其他五种兽类类群,即:Fummbocythere tumiensis anjarensisGomphocythere strangulataG。paucisulcatusZonocypris gujaratensis互生藻我们的样本中也存在来自该地区的较早记录的文档。除这两个新的生物分类外,其他十种也已知发生在德干火山省东部,中部,南部和西部的同时代圈间和圈下床中。根据兽类动物群的化石层位推断出马斯特里赫特时代。进行了成虫类群的生物地层学评估,然后进行了古生态学和古环境分析。与陆生脊椎动物遗骸,腹足类动物和风生物一起存在的非海洋类成虫纲有利于古吉里带间河床的淡水沉积环境,并且没有提供任何证据表明最新白垩纪的纳尔默达系沿线普遍存在海洋条件。

更新日期:2021-04-01
down
wechat
bug