希区柯克1858:鱼属的修订

IF 1.2 4区地球科学 Q2 GEOLOGY

Atlantic Geology Pub Date : 2017-01-13 DOI:10.4138/ATLGEOL.2016.013

P. Getty

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引用次数: 4

摘要

将节肢动物的足迹与相似的石印属和Copeza区分的特征包括足迹序列的位置、排列和方向。在最初描述的五种双叉猿中，本文只确认了laqueatus和scolopendroideus;其他三个鱼种被认为是双叉鱼的名义或低级主观同义词。在马萨诸塞州霍利奥克的哈特福德盆地早侏罗世东柏林组中发现的两个新标本，代表了除迪尔菲尔德盆地外第二个明确出现的鱼属。目前已知的双叉猿只来自早侏罗世。

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Bifurculapes Hitchcock 1858: a revision of the ichnogenus

Characters differentiating the arthropod trackway Bifurculapes from the similar ichnogenera Lithographus and Copeza include the position, arrangement and orientation of the tracks within the series. Of the five species of Bifurculapes originally described, only Bifurculapes laqueatus and Bifurculapes scolopendroideus are recognized herein; the other three ichnospecies are considered to be nomina dubia or junior subjective synonyms of Bifurculapes laqueatus . Two new specimens, recovered from the Early Jurassic East Berlin Formation of the Hartford Basin in Holyoke, Massachusetts, represent only the second unequivocal occurrence of the ichnogenus outside of the Deerfield Basin. Bifurculapes is currently known only from the Early Jurassic.

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来源期刊

Atlantic Geology GEOLOGY-

CiteScore

2.10

自引率

18.80%

发文量

审稿时长

>12 weeks

期刊介绍： Atlantic Geology (originally Maritime Sediments, subsequently Maritime Sediments and Atlantic Geology) covers all aspects of the geology of the North Atlantic region. It publishes papers, notes, and discussions on original research and review papers, where appropriate to the regional geology.