A sclerite-bearing stem group entoproct from the early Cambrian and its implications.
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ABSTRACT:
SUBMITTER: Zhang Z
PROVIDER: S-EPMC3548229 | biostudies-literature | 2013
REPOSITORIES: biostudies-literature
Publications
A sclerite-bearing stem group entoproct from the early Cambrian and its implications.
Zhang Zhifei Z Holmer Lars E LE Skovsted Christian B CB Brock Glenn A GA Budd Graham E GE Fu Dongjing D Zhang Xingliang X Shu Degan D Han Jian J Liu Jianni J Wang Haizhou H Butler Aodhán A Li Guoxiang G
Scientific reports 20130117
The Lophotrochozoa includes disparate tentacle-bearing sessile protostome animals, which apparently appeared in the Cambrian explosion, but lack an uncontested fossil record. Here we describe abundant well preserved material of Cotyledion tylodes Luo et Hu, 1999, from the Cambrian (Series 2) Chengjiang deposits, reinterpreted here as a stem-group entoproct. The entoproct affinity is supported by the sessile body plan and interior soft anatomy. The body consists of an upper calyx and a lower elon ...[more]
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