Anaxyrus microscaphus

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Taxonavigation: Anura 

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Amphibia
Subclassis: Lissamphibia
Ordo: Anura

Familia: Bufonidae
Genus: Anaxyrus
Species: Anaxyrus microscaphus


Anaxyrus microscaphus (Cope, 1867)

Type locality: "Fort Mohave, Mohave County, Arizona", USA.

Holotype: USNM 4106 (now lost), 4184, and 132901.


The recognition of Anaxyrus as a genus distinct from Bufo is highly controversial, and has not been accepted by many herpetologists working with this group. For a complete phylogeny of the species in this group and their relationships as a subgroup within Bufo, see Pauly et al. (2004).


  • Bufo microscaphus Cope, 1867
  • Bufo lentiginosus microscaphusGarman, 1884
  • Bufo woodhousii microscaphusShannon, 1949
  • Bufo microscaphus microscaphusStebbins, 1951


  • Cope, 1867 "1866", Proc. Acad. Nat. Sci. Philadelphia, 18: 301.
  • Pauly, G. B., D. M. Hillis, and D. C, Cannatella. (2004) The history of a Nearctic colonization: Molecular phylogenetics and biogeography of the Nearctic toads (Bufo). Evolution 58: 2517–2535.
  • Frost, Darrel R. 2018. Amphibian Species of the World: an Online Reference. Version 6.0. Electronic Database accessible at American Museum of Natural History, New York, USA. Anaxyrus microscaphus . Accessed on 26 Mar 2008.
  • World Conservation Monitoring Centre IUCN: Anaxyrus microscaphus  (Least Concern)

Vernacular names[edit]

English: Arizona Toad, Fort Mojave Toad, Southwestern Toad