family Petromyzontidae
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Noun | 1. | family Petromyzontidae - lampreys fish family - any of various families of fish Cyclostomata, order Cyclostomata - primitive jawless aquatic vertebrate: lampreys; hagfishes lamper eel, lamprey, lamprey eel - primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue genus Petromyzon, Petromyzon - typical lampreys |
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