Pikaia

phylum	Chordata	Pikaia gracilens was a primitive chordate animal, that lacked a well defined head and was typically less than 2 inches (5 centimetres) in length, known from the Middle Cambrian Burgess Shale of British Columbia. Sixteen specimens are known from the Greater Phyllopod bed, where they comprised 0.03% of the community. It resembles the lancelet and perhaps swam much like an eel. Molecular studies favor the tunicate as the closest living relative of the vertebrates instead of the lancelet. For more information, visit the Wikipedia entry. Get back to Cephalochordate
Subphylum	Cephalochordata
family	†Pikaiidae
genus	Pikaia
species	P. gracilens

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  COG Pikaia

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  Kinto FP-208 Pikaia

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  ROM Pikaia