Geotriinae

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Agnatha
Superclassis: Cyclostomi
Classis: Petromyzonti
Ordo: Petromyzontiformes

Familia: Petromyzontidae
Subfamilia: Petromyzontinae
Genus: Entosphenus
Species: E. tridentatus

Entosphenus is a genus of lampreys.
Species

Seven species in this genus are recognized:[1]

Entosphenus folletti Vladykov & Kott, 1976 (Modoc brook lamprey)
Entosphenus hubbsi Vladykov & Kott, 1976 (Kern brook lamprey)
Entosphenus lethophagus (C. L. Hubbs, 1971) (Pit-Klamath brook lamprey)
Entosphenus macrostomus (Beamish, 1982) (Vancouver lamprey)
Entosphenus minimus (C. E. Bond & T. T. Kan, 1973) (Miller Lake lamprey)
Entosphenus similis Vladykov & Kott, 1979 (Klamath river lamprey)
Entosphenus tridentatus (J. Richardson, 1836) (Pacific lamprey)

References

Froese, Rainer and Pauly, Daniel, eds. (2012). Species of Entosphenus in FishBase. April 2012 version.