Morphological disparity and evolutionary patterns of Cambrian hyoliths

IF 2.3 2区 地球科学 Q1 PALEONTOLOGY Papers in Palaeontology Pub Date : 2024-04-15 DOI:10.1002/spp2.1554
Fan Liu, Timothy P. Topper, Luke C. Strotz, Yue Liang, Yazhou Hu, Christian B. Skovsted, Zhifei Zhang
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Abstract

Hyolitha represent one of the major constituents of the Cambrian Evolutionary Fauna, first appearing in the Terreneuvian and rapidly diversifying soon after. Recent work has both enriched the hyolith fossil record and expanded our understanding of their biology, but studies documenting the evolutionary trajectory of Cambrian hyoliths remain scarce. Here we present the first study of changes in morphological disparity in Cambrian hyoliths over time with the aim of characterizing the evolutionary trajectory of hyoliths throughout their primary period of diversification. Our results show that hyoliths occupied distinct regions of morphospace at different times during the Cambrian, with an expansion in morphospace occupation associated with the increase in hyolith diversity in the early Cambrian. Both the Sinsk Event and multiple abiotic factors led to a decline in hyolith diversity in the Miaolingian, and morphological disparity also contracts in association with this reduction in diversity.
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寒武纪透明石的形态差异和进化模式
叠层石是寒武纪演化动物群的主要成分之一,最早出现在泰伦卢时期,之后很快迅速多样化。最近的研究工作丰富了透明石的化石记录,也拓展了我们对透明石生物学的认识,但记录寒武纪透明石进化轨迹的研究仍然很少。在这里,我们首次研究了寒武纪叠层石的形态差异随时间的变化,目的是描述叠层石在其主要多样化时期的进化轨迹。我们的研究结果表明,在寒武纪的不同时期,吸水石占据了形态空间的不同区域,形态空间占据范围的扩大与寒武纪早期吸水石多样性的增加有关。辛斯克事件和多种非生物因素导致了苗岭晚期吸水石多样性的减少,形态差异也随着多样性的减少而缩小。
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来源期刊
Papers in Palaeontology
Papers in Palaeontology PALEONTOLOGY-
CiteScore
4.50
自引率
4.30%
发文量
55
期刊介绍: Papers in Palaeontology is the successor to Special Papers in Palaeontology and a journal of the Palaeontological Association (www.palass.org). The journal is devoted to the publication of papers that document the diversity of past life and its distribution in time and space. Papers in Palaeontology is devoted to the publication of papers that document the diversity of past life and its distribution in time and space. As a sister publication to Palaeontology its focus is on descriptive research, including the descriptions of new taxa, systematic revisions of higher taxa, detailed biostratigraphical and biogeographical documentation, and descriptions of floras and faunas from specific localities or regions. Most contributions are expected to be less than 30 pp long but longer contributions will be considered if the material merits it, including single topic parts. The journal publishes a wide variety of papers on palaeontological topics covering: palaeozoology, palaeobotany, systematic studies, palaeoecology, micropalaeontology, palaeobiogeography, functional morphology, stratigraphy, taxonomy, taphonomy, palaeoenvironmental reconstruction, palaeoclimate analysis, biomineralization studies.
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