The northern lampreys (Petromyzontidae) are a family of lampreys.[1] Northern lampreys have the highest number of chromosomes (164–174) among vertebrates.[2]
| 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 Linnaeus, 1758 | |
| Genera | |
|
Caspiomyzon | |
| Taxon identifiers |
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