Northern lampreys

The northern lampreys (Petromyzontidae) are a family of lampreys. Northern lampreys (Petromyzontidae) have the highest number of chromosomes (164-174) among vertebrates.

Northern lampreys

The northern lampreys (Petromyzontidae) are a family of lampreys. Northern lampreys (Petromyzontidae) have the highest number of chromosomes (164-174) among vertebrates.