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Fishes are divided into several major groupings. |
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Living species include hagfhish and lampreys
Extinct placoderms and sharks, skates, and rays
The dominant kind of fishes
These are mostly extinct, but thought to be ancestral to the tetrapods.
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This is connected first to other sciences. Other areas of knowledge such as Personal studies, anthropology, culture, institutions, sociology, and history will be connected as this site develops. |
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