加拿大新斯科舍省宾夕法尼亚中期悉尼煤田杯状种子的唯一已知记录

IF 1.2 4区地球科学 Q2 GEOLOGY

Atlantic Geology Pub Date : 2021-09-18 DOI:10.4138/atlgeol.2021.011

E. Zodrow

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引用次数: 0

摘要

从加拿大新斯科舍省的中宾夕法尼亚悉尼煤田收集的唯一已知的lyginopterid丘形种子包括一个围绕卵形结构3×2毫米的联合对偶，这被解释为胚珠。胚珠呈白色，反映其钙质保存方式，缺乏细胞残余。由于标本不完整，不可能进行详细的分类确定，但它的亲缘关系属于lyginopterid(或hydrasperman)翼类。这一重大发现增加了先前悉尼煤田植物区系中关于延髓类蕨类植物的记载。

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Note on the only known record of a cupulate seed from the Middle Pennsylvanian Sydney Coalfield, Nova Scotia, Canada

The only known lyginopterid cupulate seed collected from the Middle Pennsylvanian Sydney Coalfield in Nova Scotia, Canada, comprises a coalified cupule surrounding an ovate structure 3×2 mm in size that is interpreted as an ovule. The ovule is white, reflecting its calcitic mode of preservation, and lacks cellular remains. As the specimen is incomplete, a detailed taxonomic determination is not possible, but its affinities lie within the lyginopterid (or hydrasperman) pteridosperms. This significant discovery of a lyginopterid pteridosperm aug-ments previous accounts of medullosalean pteridosperms from the flora of Sydney Coalfield.

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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.