Neogene ostracods from the Solimões Formation (Atalaia do Norte, Amazonas State, Brazil), with the description of two new species

IF 0.7 4区地球科学 Q4 PALEONTOLOGY

Revista Brasileira De Paleontologia Pub Date : 2022-04-12 DOI:10.4072/rbp.2022.1.05

A. P. Linhares, M. I. Ramos

引用次数: 1

Abstract

The analysis of the ostracods from three boreholes (1AS-7D-AM, 1AS-8-AM, and 1AS-31-AM) drilled in Atalaia do Norte town, Amazonas State, Brazil, allowed to recognize 30 species and nine genera. Cyprideis is the most abundant and diverse genus and is represented by 19 species already identified for the Solimões Formation, besides two new species described herein: Cyprideis atalaiensis sp. nov. and Cyprideis dictyon sp. nov. Intraspecific morphological variability, as well as the presence of nodes and tubercles, are observed in some species of Cyprideis and interpreted as a response to the paleoenvironmental changes during the Neogene in western Amazon region. Keywords: Cyprideis, morphological variability, paleoenvironmental changes, western Amazonia.

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Solimões组（Atalaia do Norte，Amazonas州，巴西）的新第三纪介形虫，描述了两个新物种

对巴西亚马逊州Atalaia do Norte镇3个钻孔(1AS-7D-AM、1AS-8-AM和1AS-31-AM)的介形类进行分析，鉴定出9属30种。塞浦路斯属(Cyprideis)是数量最多、种类最多的属，在Solimões组已鉴定出19种，此外本文还描述了两个新种:塞浦路斯属(Cyprideis atalaiensis sp. 11 .)和塞浦路斯属(Cyprideis dictyon sp. 11 . 11 .)，在某些种类中观察到种内形态变异，以及结和结节的存在，这被解释为对亚马逊西部地区新近纪古环境变化的响应。关键词:塞浦路斯;形态变异;古环境变化;

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

Revista Brasileira De Paleontologia PALEONTOLOGY-

CiteScore

1.60

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： It publishes original contributions on all aspects of Paleontology. Papers are written in English, Spanish, or Portuguese and are reviewed by international experts.