Lamprey

Class of jawless fish

Lampreys (sometimes inaccurately called lamprey eels) are a group of jawless fish composing the order Petromyzontiformes , sole order in the class Petromyzontida. The adult lamprey is characterized by a toothed, funnel-like, sucking mouth. The common name "lamprey" is probably derived from Latin lampetra, which may mean "stone licker" (lambere "to lick" + petra "stone"), though the etymology is uncertain.

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