The Genus Alatyroceras gen. nov. (Ammonoidea: Cardioceratidae, Arctocephalitinae) from the Upper Bathonian (Middle Jurassic) of the Russian Platform

IF 0.7 4区地球科学 Q4 PALEONTOLOGY

Paleontological Journal Pub Date : 2024-04-16 DOI:10.1134/s0031030123600294

V. V. Mitta

引用次数: 0

Abstract

A new genus Alatyroceras is established for the species A. nageli (Mitta) (type species of the genus), A. keuppi (Mitta), A. efimovi (Mitta), and A. infimum (Gulyaev et Kiselev), in Central Russia characterizing the interval correlated with the Upper Bathonian Variabile and Calyx zones of East Greenland. According to the refined data, the Keuppi Zone of the Russian Platform includes (from bottom to top) the efimovi, nageli, and keuppi faunal horizons. The genus Alatyroceras [M] completes the phylogenetic lineage Arcticoceras → Alatyroceras in the subfamily Arctocephalitinae; the name Costacadoceras Rawson is common to all microconchs of the subfamily.

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来自俄罗斯地台上巴吞纪（中侏罗世）的新属Alatyroceras (Ammonoidea: Cardioceratidae, Arctocephalitinae)

摘要为俄罗斯中部的A. nageli (Mitta)（该属的模式种）、A. keuppi (Mitta)、A. efimovi (Mitta)和A. infimum (Gulyaev et Kiselev)建立了一个新的Alatyroceras属，其特征是与东格陵兰的上巴吞纪Variabile和Calyx区相关的区间。根据完善的数据，俄罗斯地台的 Keuppi 区包括（从下到上）efimovi、nageli 和 keuppi 动物层。Alatyroceras 属[M]完成了 Arctocephalitinae 亚科 Arcticoceras → Alatyroceras 的系统发育系；Costacadoceras Rawson 这一名称是该亚科所有微壳类的通用名称。

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

Paleontological Journal 地学-古生物学

CiteScore

1.20

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Paleontological Journal (Paleontologicheskii zhurnal) is the principal Russian periodical in paleontology. The journal publishes original work on the anatomy, morphology, and taxonomy of fossil organisms, as well as their distribution, ecology, and origin. It also publishes studies on the evolution of organisms, ecosystems, and the biosphere and provides invaluable information on global biostratigraphy with an emphasis on Eastern Europe and Asia.