A superarmoured lobopodian Collinsium sp.from the Cambrian(Stage 4) Wulongqing Formation in Kunming clearly exhibits dorsal sets of sclerotized spines,suspension feeding appendages with spiniform setae,and annulated w...A superarmoured lobopodian Collinsium sp.from the Cambrian(Stage 4) Wulongqing Formation in Kunming clearly exhibits dorsal sets of sclerotized spines,suspension feeding appendages with spiniform setae,and annulated walking limbs with a terminal claw.The distinctive body configuration reinforces the remarkable appendage specialization associated with feeding and locomotion and overall morphological disparity in lobopodians during the Cambrian explosion.This finding extends the geographic and stratigraphic ranges of "Collins' monster"-like lobopodians,and provides additional information for a better understanding of the cryptic stemgroup Onychophora.展开更多
The Early Cambrian Chengjiang Biota of China has preserved many species of vermiform animals in exquisite detail,which provide a unique window into the origin and early evolution of different vermiform phyla.This arti...The Early Cambrian Chengjiang Biota of China has preserved many species of vermiform animals in exquisite detail,which provide a unique window into the origin and early evolution of different vermiform phyla.This article reviews and discusses the forty-five Chengjiang vermiform animals discovered so far,and specifically comments on the phylogeny,modes of life,evolutionary significance as well as existing debates concerning the Chengjiang priapulid and lobopodian phyla.This article analyzes existing problems with Chengjiang vermiform morphological research and highlights various factors that affect the final preserved fossil morphology,including taphonomy and shape change caused by vermiform movement,as well as proposing that Anningvermis multispinosa and Corynetis brevis are synonymous.Chengjiang vermiform animals displayed a great diversity of morphologies and ecological roles,which is significant for understanding the origin and evolution of early metazoans;the potential for future research is enormous but needs to be broadened by interdisciplinary work involving taphonomy,geochemistry,cladistics,and genetics.展开更多
基金supported by the National Natural Science Foundation of China(U1402232,41472022,41272027)the Department of Science and Technology,Yunnan Province(2015HA045)the Bureau of Geology and Mineral Exploration and Development,Yunnan Province(2015JJ05)
文摘A superarmoured lobopodian Collinsium sp.from the Cambrian(Stage 4) Wulongqing Formation in Kunming clearly exhibits dorsal sets of sclerotized spines,suspension feeding appendages with spiniform setae,and annulated walking limbs with a terminal claw.The distinctive body configuration reinforces the remarkable appendage specialization associated with feeding and locomotion and overall morphological disparity in lobopodians during the Cambrian explosion.This finding extends the geographic and stratigraphic ranges of "Collins' monster"-like lobopodians,and provides additional information for a better understanding of the cryptic stemgroup Onychophora.
基金supported by National Natural Science Foundation of China (Grant No. 40730211)National Basic Research Programme of China (Grant No. 206CB806400)Natural Science Foundation of Department of Science and Technology of Yunnan Province (Grant No. 2005D002Z)
文摘The Early Cambrian Chengjiang Biota of China has preserved many species of vermiform animals in exquisite detail,which provide a unique window into the origin and early evolution of different vermiform phyla.This article reviews and discusses the forty-five Chengjiang vermiform animals discovered so far,and specifically comments on the phylogeny,modes of life,evolutionary significance as well as existing debates concerning the Chengjiang priapulid and lobopodian phyla.This article analyzes existing problems with Chengjiang vermiform morphological research and highlights various factors that affect the final preserved fossil morphology,including taphonomy and shape change caused by vermiform movement,as well as proposing that Anningvermis multispinosa and Corynetis brevis are synonymous.Chengjiang vermiform animals displayed a great diversity of morphologies and ecological roles,which is significant for understanding the origin and evolution of early metazoans;the potential for future research is enormous but needs to be broadened by interdisciplinary work involving taphonomy,geochemistry,cladistics,and genetics.
