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Definition of Petromyzoniformes
1. Noun. Lampreys as distinguished from hagfishes.
Exact synonyms: Hyperoartia, Suborder Hyperoartia, Suborder Petromyzoniformes
Generic synonyms: Animal Order
Group relationships: Cyclostomata, Order Cyclostomata
Generic synonyms: Animal Order
Group relationships: Cyclostomata, Order Cyclostomata