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Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.

Taxonomy of the family Phrynosomatidae
Bibliography of the genus Petrosaurus
Biodiversity of the family Phrynosomatidae


Baja California Rock Lizards



1885 Petrosaurus Boulenger (type species: Uta thalassina Cope 1863)
1942 Streptosaurus Mittleman (type species: Uta mearnsi Stejneger 1894; syn. Savage 1958)
Contents: 4 species, of which 3 (75.0%) are endemic.
Endemism: 0% 100%
Distribution: Mexico (Baja California Norte [incl. Isla Angel de la Guarda], Baja California Sur), USA (California).

Petrosaurus mearnsi

Long-nosed Rock Lizard, (Common Banded Rock Lizard)

Spitzschnäuziger Felsenleguan

Spidssnudet Klippeleguan

1894 Uta mearnsi Stejneger
Streptosaurus mearnsi Mittleman 1942
Petrosaurus mearnsi Lowe 1955
Dipsosaurus mearnsi [lapsus] Buth, Murphy, Miyamoto & Lieb 1981

Remarks: Previously included slevini.
Distribution: Mexico (Baja California Norte), USA (California).

Petrosaurus repens

Short-nosed Rock Lizard

Kurzschnäuziger Felsenleguan

Butsnudet Klippeleguan

1895 Uta repens Van Denburgh
Petrosaurus repens Mittleman 1942
Petrosaurus thalassinus repens Leviton & Banta 1964

Remarks: Revalidated as a separate species by Grismer (1999), although already Welsh (1988) considered the two species distinct, but without discussion.
Distribution: Mexico (Baja California Norte, Baja California Sur).

Petrosaurus slevini

Banded Rock Lizard, (Slevin's Banded Rock Lizard)

Gebänderter Felsenleguan

Båndet Klippeleguan

1922 Uta slevini Van Denburgh
Streptosaurus slevini Mittleman 1942
Petrosaurus mearnsi slevini Soulé & Sloan 1966
Petrosaurus slevini Grismer 1999

Remarks: Revalidated as a separate species by Grismer (1999).
Distribution: Mexico: Baja California Norte (Isla Angel de la Guarda, Isla Mejia).

Petrosaurus thalassinus

Baja California Blue Rock Lizard, San Lucan Rock Lizard

Niederkalifornischer Felsenleguan

Baja California-klippeleguan

1863 Uta thalassina Cope
Petrosaurus thalassinus Boulenger 1885

Remarks: Previously included repens.
Distribution: Mexico (Baja California Sur [incl. Isla Espiritu Santo, Isla Partida Sur]).

Petrosaurus thalassinus
© Rune Midtgaard