Origin, diversification, and relationships of Cambrian lobopods |
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Authors: | Jianni Liu Degan Shu Jian Han Zhifei Zhang Xingliang Zhang |
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Institution: | aEarly Life Institute, The Key Laboratory of Continental Dynamics, Northwest University, Xi'an, 710069, PR China;bSchool of Earth Sciences and Resources, China University of Geosciences (Beijing), 100083, PR China |
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Abstract: | As an extinct group, the origin, diversification and relationships of Cambrian lobopods have long been one of the most hotly-debated subjects. Lobopods used to be regarded as closely related to modern onychophorans and tardigrades, but the similarities are based on the few species of Cambrian lobopods and often on a fairly general level. With the discovery of new creatures and based on new observations on fossil lobopods, we consider that Cambrian lobopods show great diversity and reveal a close relationship between Cambrian lobopods and arthropods. In addition, comparison between the dorsal spines of Cambrian lobopods and small shelly fossils suggest that Cambrian lobopods might have originated from the Meishucun radiation and diversified in the Qiongzhusi radiation. |
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Keywords: | Cambrian lobopods Arthropods Small shelly fossils Origin Diversification |
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