Oldest record of the fossil syncarid (Crustacea) Palaeocaris from the Carboniferous Manning Canyon Formation, Utah, USA

IF 1.6 4区 地球科学 Q2 PALEONTOLOGY Geobios Pub Date : 2023-04-01 DOI:10.1016/j.geobios.2023.03.003
Allan J Lerner, Spencer G. Lucas
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Abstract

New records documented here demonstrate that Palaeocaris Meek and Worthen, 1865 was the most cosmopolitan and longest ranging (earliest Bashkirian to Gzhelian) fossil syncarid genus. It contains three species that are primarily known from occurrences in Euramerican Carboniferous Lagerstätten. Two of these species, P. typus Meek and Worthen, 1865 and P. secretanae Schram, 1984, have previously been reported from North America. We add a third species to the North American fossil record, Palaeocaris retractata Calman, 1932, from the Manning Canyon Formation (Bashkirian) of north-central Utah, USA. This is the oldest geological record of Palaeocaris and extends the temporal range of P. retractata back from its appearance in the transitional Bashkirian to Moscovian Bickershaw Lagerstätte of England by at least 4 million years. The Manning Canyon Formation occurrence expands the paleogeographic distribution of P. retractata from western Europe (England) to the northeastern edge of the Great Basin, USA.

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美国犹他州石炭纪曼宁峡谷组合壳动物化石的最古老记录
这里的新记录表明,1865年的古ocaris Meek和Worthen是分布最广、分布最广(最早的巴什基利亚人到格日利亚人)的合胞属化石。它包含三个主要从欧美石炭纪Lagerstätten中发现的物种。其中两种,P. typus Meek and Worthen(1865年)和P. secretanae Schram(1984年),以前曾在北美报道过。我们在北美化石记录中增加了第三个物种,古ocaris retractata Calman, 1932,来自美国犹他州中北部的曼宁峡谷组(Bashkirian)。这是古ocaris最古老的地质记录,并将P. retractata的时间范围从它在英国巴什基利亚过渡时期到莫斯科比克肖Lagerstätte时期的出现,延长了至少400万年。曼宁峡谷组的产状扩大了P. retractata从西欧(英国)到美国大盆地东北边缘的古地理分布。
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来源期刊
Geobios
Geobios 地学-古生物学
CiteScore
3.30
自引率
6.20%
发文量
28
审稿时长
6-12 weeks
期刊介绍: Geobios publishes bimonthly in English original peer-reviewed articles of international interest in any area of paleontology, paleobiology, paleoecology, paleobiogeography, (bio)stratigraphy and biogeochemistry. All taxonomic groups are treated, including microfossils, invertebrates, plants, vertebrates and ichnofossils. Geobios welcomes descriptive papers based on original material (e.g. large Systematic Paleontology works), as well as more analytically and/or methodologically oriented papers, provided they offer strong and significant biochronological/biostratigraphical, paleobiogeographical, paleobiological and/or phylogenetic new insights and perspectices. A high priority level is given to synchronic and/or diachronic studies based on multi- or inter-disciplinary approaches mixing various fields of Earth and Life Sciences. Works based on extant data are also considered, provided they offer significant insights into geological-time studies.
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