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chordate
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Chordate
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Chordate
chordate summary
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Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
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Chordate
Chordate X-ray fish (Pristella maxillaris), is an example of a chordate with a visible backbone.

chordate

animal phylum
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Also known as: Chordata
Written by
Michael T. Ghiselin
Senior Research Fellow, California Academy of Sciences, San Francisco. Author of The Triumph of the Darwinian Method.
Michael T. Ghiselin
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Key People:
William Bateson

chordate, any member of the phylum Chordata, which includes the vertebrates (subphylum Vertebrata), the most highly evolved animals, as well as two other subphyla—the tunicates (subphylum Tunicata) and cephalochordates (subphylum Cephalochordata). Some classifications also include the phylum Hemichordata with the chordates. As the name implies, at some time in the life cycle a chordate possesses a stiff, dorsal supporting rod (the notochord). Also characteristic of the chordates are a tail that extends behind and above the anus, a hollow nerve cord above (or dorsal to) the gut, gill slits opening from the pharynx to the exterior, and an endostyle (a ...(100 of 2811 words)

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