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Definition of Petromyzontid
1. Noun. (zoology) Any of the Petromyzontida, a group of jawless fish including the modern lampreys and their fossil relatives. ¹
¹ Source: wiktionary.com
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1. Noun. (zoology) Any of the Petromyzontida, a group of jawless fish including the modern lampreys and their fossil relatives. ¹
¹ Source: wiktionary.com