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| Northern lamprey | |
|---|---|
| |
| Sea lampreys (Petromyzon marinus) on a lake trout | |
| |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | Hyperoartia |
| Order: | Petromyzontiformes |
| Family: | Petromyzontidae A. Risso, 1827 |
| Type species | |
| Petromyzon marinus | |
| Genera | |
|
Caspiomyzon | |
The northern lampreys (Petromyzontidae) are a family of lampreys.[1] Northern lampreys have the highest number of chromosomes (164–174) among vertebrates.[2]
- ^ McEachran, J.; Fechhelm, J.D. (1998). Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to Gasterosteiformes. Fishes of the Gulf of Mexico. Austin: University of Texas Press. p. 35. ISBN 978-0-292-75206-1. OCLC 38468784. Retrieved 12 July 2021.
- ^ Froese, Rainer, and Daniel Pauly, eds. (2011). "Petromyzontidae" in FishBase. February 2011 version.