What is an extensive division of gastropod mollusks in which the odontophore is long and narrow, and usually bears seven rows of teeth. It includes a large number of families both marine and fresh- water called?

taenioglossa — An extensive division of gastropod mollusks in which the odontophore is long and narrow, and usually bears seven rows of teeth. It includes a large number of families both marine and fresh- water. (Webster's 1913.)

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