nduring evolutionary embellishment of cloudinids in the Cambria

Autor(es)

Park, Tae-Yoon S. ^{[1, 2]} ; Jung, Jikhan ^{[1, 2]} ; Lee, Mirinae ^[1] ; Lee, Sangmin ^[3] ; Zhen, Yong Yi ^[4] ; Hua, Hong ^[5] ; Warren, Lucas V. ^[6] ; Hughes, Nigel C. ^{[7, 8]}

Afiliação do(s) autor(es)

^[1] Korea Polar Res Inst, Div Earth Sci, Incheon 21990 - South Korea

^[2] Univ Sci & Technol, Polar Sci, Daejeon 34113 - South Korea

^[3] Univ Wollongong, Sch Earth Atmospher & Life Sci, Wollongong, NSW - Australia

^[4] WB Clarke Geoscience Ctr, Geol Survey New South Wales, Londonderry Rd, Londonderry 947953 - Australia

^[5] Northwest Univ, Dept Geol, Early Life Inst & State Key Lab Continental Dyna, Xian 710069 - Peoples R China

^[6] Sao Paulo State Univ, Inst Exact & Geosci, Dept Geol, 24A Ave, BR-13506900 Rio Claro - Brazil

^[7] Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 - USA

^[8] Indian Stat Inst, Geol Stud Unit, 203 B.T. Rd, Kolkata 700108 - India

• Tipo de documento: Artigo Científico
• Fonte: ROYAL SOCIETY OPEN SCIENCE; v. 8, n. 12 DEC 8 2021.
• Citações Web of Science: 1

Resumo

The Ediacaran-Cambrian transition and the following Cambrian Explosion are among the most fundamental events in the evolutionary history of animals. Understanding these events is enhanced when phylogenetic linkages can be established among animal fossils across this interval and their trait evolution monitored. Doing this is challenging because the fossil record of animal lineages that span this transition is sparse, preserved morphologies generally simple and lifestyles in the Ediacaran and Cambrian commonly quite different. Here, we identify derived characters linking some members of an enigmatic animal group, the cloudinids, which first appeared in the Late Ediacaran, to animals with cnidarian affinity from the Cambrian Series 2 and the Miaolingian. Accordingly, we present the first case of an animal lineage represented in the Ediacaran that endured and diversified successfully throughout the Cambrian Explosion by embellishing its overall robustness and structural complexity. Among other features, dichotomous branching, present in some early cloudinids, compares closely with a cnidarian asexual reproduction mode. Tracking this morphological change from Late Ediacaran to the Miaolingian provides a unique glimpse into how a primeval animal group responded during the Cambrian Explosion. (AU)

• Processo FAPESP: 18/26230-6 - 10 milhões de anos que transformaram o planeta: contexto paleoambiental da evolução dos primeiros animais com esqueleto no Período Ediacarano Terminal
• Beneficiário: Lucas Verissimo Warren
• Modalidade de apoio: Auxílio à Pesquisa - Regular