Anaxyrus baxteri (Porter, 1968)
Type locality: "0.5 mile NW Laramie, Albany County, Wyoming".
Holotype: K.R. Porter Collection 5-164, current location unknown.
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).
- Porter, 1968, Evolution, 22: 593.
- 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. 2010. Amphibian Species of the World: an Online Reference. Version 5.4 (8 April, 2010). Electronic Database accessible at  American Museum of Natural History, New York, USA. Anaxyrus baxteri . Accessed on 26 Mar 2008.
- World Conservation Monitoring Centre IUCN: Anaxyrus baxteri (Extinct In The Wild)