A Pikaia-like chordate from the Lower Cambrian of China
Article Abstract:
Cathaymyrus diadexus is an eel-like chordate fossil similar to the Pikaia gracilens, which was found in the Lower Cambrian of China. However, the fossil predates the Burgess Shale chordate Pikaia by about 10 million years. The chordate has pharyngeal gill slit structures which have not yet been observed in the Pikaia. However, the Cambrian cephalochordate is similar to the Pikaia in its shape, the anterior pharynx, myotomes and the notochord.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Careful with that amphioxus
Article Abstract:
A range of phylogenetic methods is applied to a large genomic data to question the similarities between amphioxus and vertebrates. It is shown that tunicates are the closest extant relatives of vertebrates, and that amphioxus is not closely related to either vertebrates or tunicates, but is more similar to echinoderms.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Ancestral echinoderms from the Chengjiang deposits of China
Article Abstract:
Concerns are expressed about the earliest evolution of the echinoderms. Primitive echinoderms are studied based on the excavations carried out in South Western China.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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