A new fossil species of Callipteris (Callipteridae) in the Early Permian from the Xishan Area in Beijing, North China

IF 1 4区生物学 Q3 PLANT SCIENCES

Phytotaxa Pub Date : 2024-03-21 DOI:10.11646/phytotaxa.641.4.6

Xinyu Chen, HUA-CHUAN Zhang, JIN-YUE Yang

引用次数: 0

Abstract

A new early Permian Medullosa (Pteridospermatophyta) is described based on a moderately well-preserved sample from Xishan Area in Beijing, North China. Callipteris seshufenensis Chen sp. nov. represents the first record of genus Callipteris in the early Permian period in Beijing region. Callipteris seshufenensis has a remarkable morphology characterized by a narrow midvein with distinct transverse stripes, small pinnules with 2–3 lateral branches directly connected with pinna-rachis except for the rounded-obtuse apex of pinnule and costule divided more than three times (sometimes more than five times). Together with coeval callipterid fossils recorded from the North China plate and the Siberian plate, the present discovery suggests that the migration route of callipterids in China extended from West China to Northeast China.

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华北北京西山地区早二叠世Callipteris（Callipteridae）的一个新化石物种

基于华北北京西山地区一个保存较好的样本，描述了一个新的早二叠世髓鞘类（翼手目）。Callipteris seshufenensis Chen sp.陈氏胼胝体（Callipteris seshufenensis）具有显著的形态特征：中脉狭窄，有明显的横向条纹；羽片较小，除羽片先端圆钝外，有 2-3 个侧枝与羽轴直接相连；肋裂超过 3 次（有时超过 5 次）。这一发现与华北板块和西伯利亚板块记录的共生茧尾蜥化石一起，表明茧尾蜥在中国的迁移路线是从华西延伸到东北。

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

Phytotaxa PLANT SCIENCES-

CiteScore

1.90

自引率

27.30%

发文量

956

审稿时长

1 months

期刊介绍： Phytotaxa is a peer-reviewed, international journal for rapid publication of high quality papers on any aspect of systematic and taxonomic botany, with a preference for large taxonomic works such as monographs, floras, revisions and evolutionary studies and descriptions of new taxa. Phytotaxa covers all groups covered by the International Code of Nomenclature foralgae, fungi, and plants ICNafp (fungi, lichens, algae, diatoms, mosses, liverworts, hornworts, and vascular plants), both living and fossil. Phytotaxa was founded in 2009 as botanical sister journal to Zootaxa. It has a large editorial board, who are running this journal on a voluntary basis, and it is published by Magnolia Press (Auckland , New Zealand). It is also indexed by SCIE, JCR and Biosis. All types of taxonomic, floristic and phytogeographic papers are considered, including theoretical papers and methodology, systematics and phylogeny, monographs, revisions and reviews, catalogues, biographies and bibliographies, history of botanical explorations, identification guides, floras, analyses of characters, phylogenetic studies and phytogeography, descriptions of taxa, typification and nomenclatural papers. Monographs and other long manuscripts (of 60 printed pages or more) can be published as books, which will receive an ISBN number as well as being part of the Phytotaxa series.