Northern lampreys
| Northern lampreys | |
|---|---|
 ![]()  | |
| Sea lampreys (Petromyzon marinus) on a lake trout | |
 ![]()  | |
| Scientific classification | |
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Hyperoartia (Petromyzontida) | 
| Order: | Petromyzontiformes | 
| Family: |  Petromyzontidae A. Risso, 1827  | 
| Genera | |
| 
 Caspiomyzon  | |
The northern lampreys (Petromyzontidae) are a family of lampreys. Northern lampreys (Petromyzontidae) have the highest number of chromosomes (164-174) among vertebrates.[1]
References
- Froese, Rainer, and Daniel Pauly, eds. (2012). "Petromyzontidae" in FishBase. April 2012 version.
 
- ↑ Froese, Rainer, and Daniel Pauly, eds. (2011). "Petromyzontidae" in FishBase. February 2011 version.
 
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