Revision of the genus Cordaites UNGER from the Permian of the Intrasudetic Basin (Broumov Formation, Olivětín Member, Czech Republic)

IF 1.1 4区地球科学 Q3 GEOLOGY

Geologia Croatica Pub Date : 2019-10-23 DOI:10.4154/gc.2019.16

Z. Šimůnek

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引用次数: 2

Abstract

Cordaitalean remains are not very common in the Permian of the Intrasudetic Basin (Czech Republic and Poland) and have usually been classified simply as Cordaites sp. Based on leaf morphology, venation and cuticles (where possible), five cordaitalean species are recognised: Cordaites cf. beinertianus, C. cf. affinis, C. cf. roesslerianus, C. cf. foliolatus and Cordaites sp. A. The determination of Cordaites leaves is difficult because of the variability and similarities between several species. The biggest leaf was determined as Cordaites cf. beinertianus. The cuticles of Cordaites cf. affinis resemble the cuticles of C. palmaeformis and C. radvanicensis,however, the latter is known only in a fragmentary state. Cordaites beinertianus and C. palmaeformis are very similar and are considered as conspecific by some authors. Cordaites affinis has generally smaller leaves. Cordaites cf. roesslerianus is comparable with C. principalis with which it is sometimes synonymised. C. cf. foliolatus is represented by a much narrower leaf than is typical for cordaitalean leaves from France. Cordaites sp. A is a relatively small leaf-form and differs from all other forms previously described.

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捷克Broumov组二叠系Cordaites属UNGER的修正(Olivětín成员)

Cordaitalean遗迹在Intrasudetic盆地（捷克共和国和波兰）的二叠纪并不常见，通常被简单地归类为Cordaites sp.。根据叶片形态、脉序和角质层（如果可能的话），可以识别出五种Cordaites物种：Cordaites cf.beinetianus、C.cf.affinis、C.cf.roesslerians、C.ef.foliolatus和Cordaites sp.A。由于几个物种之间的变异性和相似性，很难确定Cordaites的叶子。最大的叶片被确定为Cordaites cf.beinetianus。Cordaites cf.affinis的角质层类似于C.palmaeformis和C.radvanicensis的角质层，然而，后者仅以零碎的状态为人所知。贝氏Cordaites beinetianus和掌状C.palmeformis非常相似，一些作者认为它们是同种的。鹅掌楸的叶子通常较小。Cordaites cf.roesslerians与C.principalis相当，有时与之同义。C.cf.foliolatus的叶子比法国典型的心形叶子窄得多。Cordaites sp.A是一种相对较小的叶型，与之前描述的所有其他形式不同。

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来源期刊

Geologia Croatica GEOSCIENCES, MULTIDISCIPLINARY-

CiteScore

2.90

自引率

23.10%

发文量

审稿时长

>12 weeks

期刊介绍： Geologia Croatica welcomes original scientific papers dealing with diverse aspects of geology and geological engineering, the history of the Earth, and the physical changes that the Earth has undergone or it is undergoing. The Journal covers a wide spectrum of geology disciplines (palaeontology, stratigraphy, mineralogy, sedimentology, petrology, geochemistry, structural geology, karstology, hydrogeology and engineering geology) including pedogenesis, petroleum geology and environmental geology. Papers especially concerning the Pannonian Basin, Dinarides, the Adriatic/Mediterranean region, as well as notes and reviews interesting to a wider audience (e.g. review papers, book reviews, and notes) are welcome.