The Lampreys (Petromyzontiformes) - order

(Mesomyzon)
- genera

(Priscomyzon)
- genera

(Hardistiellidae)
- family

(Mayomyzonidae)
- family

(Pipisciidae)
- family

(Geotriidae)
- family

(Mordaciidae)
- family
The Northern Lampreys
(Petromyzontidae)
- family
(Caspiomyzon)
Caspian Lamprey
(Caspiomyzon wagneri)
Ionian Brook Lamprey
(Caspiomyzon graecus)
Greek Lamprey
(Caspiomyzon hellenicus)
(Entosphenus)

(Entosphenus )

()

()

()
(Eudontomyzon)

(Eudontomyzon )

()

()

()
(Ichthyomyzon)

(Ichthyomyzon )

()

()

()
(Lethenteron)

(Lethenteron )

()

()

()
(Mesomyzon)

(Mesomyzon mengae)
-extinct-
(Petromyzon)

(Petromyzon )

()

()

()
(Priscomyzon)

(Priscomyzon riniensis)
-extinct-
(Tetrapleurodon)

(Tetrapleurodon )

()

()

()
(Geotriidae) - family
(Geotria)
Pouched Lamprey
(Geotria australis)
(Hardistiellidae) - family
(Hardistiella)

(Hardistiella montanensis)
-extinct-
(Mayomyzonidae) - family
(Mayomyzon)

(Mayomyzon pieckoensis)
-extinct-
(Mordaciidae) - family
(Mordacia)
Chilean Lamprey
(Mordacia lapicida)
Australian Lamprey
(Mordacia mordax)
Australian Brook Lamprey
(Mordacia praecox)
Northern Lampreys (Petromyzontidae) - family
(Lampetrinae) - subfamily
(Lampetrini) - tribe
(Caspiomyzon)
Caspian Lamprey
(Caspiomyzon wagneri)
(Entosphenus)
Northern California brook lamprey
(Entosphenus folletti)
Kern brook lamprey
(Entosphenus hubbsi)
Pit-Klamath brook lamprey
(Entosphenus lethophagus)
Lake lamprey
(Entosphenus macrostomus)
Miller Lake lamprey
(Entosphenus minimus)
Klamath river lamprey
(Entosphenus similis)
Pacific lamprey
(Entosphenus tridentatus)
(Eudontomyzon)

(Eudontomyzon graecus)
Drin brook lamprey
(Eudontomyzon stankokaramani)
Korean lamprey
(Eudontomyzon morii)
Carpathian brook lamprey
(Eudontomyzon danfordi)
Greek lamprey
(Eudontomyzon hellenicus)
Ukrainian brook lamprey
(Eudontomyzon mariae)
Vladykov's lamprey
(Eudontomyzon vladykovi)
River Lampreys (Lampetra)
Least Brook Lamprey
(Lampetra aepyptera)

(Lampetra alavariensis)

(Lampetra auremensis)
Western River Lamprey
(Lampetra ayresi)
European River Lamprey
(Lampetra fluviatilis)
Brook Lamprey
(Lampetra lamottenii)
Turkish Brook Lamprey
(Lampetra lanceolata)

(Lamprey lusitanica)
Pacific Brook Lamprey
(Lampetra pacifica)
European Brook Lamprey
(Lampetra planeri)
Western Brook Lamprey
(Lampetra richardsoni)
(Lethenteron)
Alaskan Brook Lamprey
(Lethenteron alaskense)
American Brook Lamprey
(Lethenteron appendix)
Arctic Lamprey
(Lethenteron camtschaticum)
Siberian Brook Lamprey
(Lethenteron kessleri)

(Lethenteron matsubarai)
Western Transcaucasian Lamprey
(Lethenteron ninae)
Far Eastern Brook Lamprey
(Lethenteron reissneri)
Lombardy Lamprey
(Lethenteron zanandreai)
(Tetrapleurodon)
Mexican Brook Lamprey
(Tetrapleurodon geminis)
Mexican Lamprey
(Tetrapleurodon spadiceus)
(Petromyzontinae) - subfamily
(Petromyzontini) - tribe
(Ichthyomyzon)
Ohio Lamprey
(Ichthyomyzon bdellium)
Chestnut Lamprey
(Ichthyomyzon castaneus)
Northern brook Lamprey
(Ichthyomyzon fossor)
Southern brook Lamprey
(Ichthyomyzon gagei)
Mountain brook Lamprey
(Ichthyomyzon greeleyi)
Silver Lamprey
(Ichthyomyzon unicuspis)
(Petromyzon)
Sea Lamprey
(Petromyzon marinus)
(Pipisciidae) - family
(Pipiscius)

(Pipiscius zangerli)