Growth patterns and affinities of Huizenodus oligaspinosus (?Cnidaria) from the lower Cambrian of South China

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios Pub Date : 2023-11-10 DOI:10.1016/j.geobios.2023.10.002

Jiachen Qin, Yunhuan Liu, Tiequan Shao, Xingyu Zhou, Mingjin Liu, Yanan Zhang, Qi Wang

引用次数: 0

Abstract

Helmet-like small shelly fossils from the Cambrian Fortunian Stage of South China are a class of morphological taxa with uncertain affinities. Here, we redefine the genera Amoebinella and Huizenodus and consider Huizenodus oligaspinosus to be a senior synonym of Amoebinella echinata. In addition, we report two compound fossils of H. oligaspinosus for the first time from the Fortunian Zhangjiagou Lagerstätte in southern Shaanxi. Their multi-branched, dendritic, rigid structure is similar to the skeletons in several groups of colonial anthozoans, and thus, H. oligaspinosus may represent the skeletal structure of an ancestral anthozoan. H. oligaspinosus could have further constructed its skeleton by producing secondary individuals from the main branches or the sub-branches of the primary individuals to accommodate more polyps.

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华南下寒武统少棘尾蜥(Huizenodus oligaspinosus)的生长模式和亲缘关系

华南寒武纪福尔图期的头盔状小壳化石是一类亲缘关系不确定的形态类群。在此，我们重新定义了Amoebinella属和Huizenodus属，并认为Huizenodus oligaspinosus是Amoebinella echinata的高级异名。此外，我们还首次报道了两件来自陕西南部福尔图张家沟拉格斯塔特的少棘螈（H. oligaspinosus）复合化石。它们的多枝、树枝状、刚性结构与几类殖生类动物的骨骼相似，因此，寡棘龙可能代表了一种祖先殖生类动物的骨骼结构。寡棘皮动物可能通过从主要个体的主枝或亚枝产生次生个体来进一步构建其骨骼，以容纳更多的息肉。

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

Geobios 地学-古生物学

CiteScore

3.30

自引率

6.20%

发文量

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.