The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

  • Anderson, J. D. 1962. A new subspecies of the ridge-nosed rattlesnake, Crotalus willardi, from Chihuahua, Mexico. Copeia 1962 (1): 160-163.
  • Anderson, J. D. 1962. A new subspecies of the ridged-nosed rattlesnake, Crotalus willardi, from Chihuahua, Mexico. Copeia 1962(1): 160-163.
  • Anderson, J.D. 1962. A new subspecies of the ridged-nosed Rattlesnake, Crotalus willardi, from Chihuahua, México. Copeia. (1) : 160-163.
  • Andrew Snider and J. Bowler (1992) Longevity of Reptiles and Amphibians in North American Collections, Second Edition. Society for the Study of Amphibians and Reptiles .
  • Armstrong, B. L. and J. B. Murphy. 1979. The Natural History of Mexican Rattlesnakes. Special Publication 5. University of Kansas Publications, Museum of Natural History, Lawrence, Kansas. vi + 88 pp.
  • Axelrod, D. J. 1950. Studies in late Tertiary paleobotany. Carnegie Institution of Washington, Publication 590. Washington D.C.. iii + 323 pp.
  • Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2004. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada, draft (2004)
  • Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
  • Barker, D. G.. 1992. Variation, infraspecific relationships and biogeography of the ridgenose rattlesnake, Crotalus willardi. Pp. 89-106 IN Campbell, J. A. and E. D. Brodie Jr. (eds.), Biology of the Pitvipers. Selva Publishers, Tyler, Texas. xi + 467 pp. + 17 pl.
  • Barker, David G. 1992. Variation, Infraspecific Relationships and Biogeography of the Ridgenose Rattlesnake, Crotalus willardi. In Biology of the Pit vipers, edited by Jonathan A. Campbell and Edmund D. Brodie. Selva, Tyler, Texas, pp. 89-105.
  • Beaman, K.R. & Hayes, W.K. 2008. Rattlesnakes: Research Trends and Annotated Checklist. In: Hayes et al. (eds), The biology of rattlesnakes. Loma Linda University Press, pp. 5-16.
  • Brown, D. E. 1994. Biotic Communities: Southwestern United States and Northwestern Mexico. University of Utah Press, Salt Lake City. 342 pp.
  • Bryson, R.W. 2007. Fotopirsch auf Gebirgsklapperschlangen. Reptilia (Münster) 12 (4): 32-37.
  • Campbell, J.A. & Lamar, W.W. 1989. The Venomous Reptiles of Latin America. Comstock Publishing/Cornell University Press, Ithaca.
  • Campbell, J.A. y Lamar, W.W. 1989. The Venomous Reptiles of Latin America. Comstock Publishing Associates. Estados Unidos de Norteamerica.
  • Degenhardt, W.G., Painter, Ch.W. y Price, A.H. 1996. Amphibians and reptiles of New Mexico. University of New Mexico Press. New Mexico.
  • Degenhardt, William G.; C. W. Painter, and A. H. Price. 1996. Amphibians and reptiles of New Mexico. Univ. New Mexico Press.
  • Dodd, C. Kenneth, Jr. 1979. A bibliography of endangered and threatened amphibians and reptiles in the United States and its territories (conservation, distribution, natural history, status). Smithsonian Herp. Inf. Serv. 1979 (46): 1-35.
  • Felger, R. S. and M. F. Wilson. 1995. Northern Sierra Madre Occidental. Pp. 36-51 IN DeBano, L. F., G. J. Gottfried, R. H. Hamre, C. B. Edminster, P. F. Pfolliott and A. Ortega-Rubio (eds.). Biodiversity and Magagement of the Madrean Archipelago: The Sky Islands of Southwestern United States and Northwestern Mexico. General Technical Report RM-GTR-264, Rocky Mountain Forest and Range Experiment St
  • Flores-Villela, Oscar / McCoy, C. J., ed. 1993. Herpetofauna Mexicana: Lista anotada de las especies de anfibios y reptiles de México, cambios taxonómicos recientes, y nuevas especies. Carnegie Museum of Natural History Special Publication, no. 17. iv + 73
  • Gloyd, H.K. 1940. The rattlesnakes, genera Sistrurus and Crotalus. The Chicago Academy of Science. Chicago.
  • Goldman, E. A. 1951. Biological investigations in Mexico. Smithsonian Miscellaneous Collections Volume 115, United States National Museum, Smithsonian Institution, Washington, D. C.. 476 pp.
  • Harris, H. Jr., R. S. Simmons. 1976. . Bull. Maryland Herp. Soc. 12 (1): 5.
  • Harris, H.S. y Simmons, R.S. 1976. The paleogeography and evolution of Crotalus willardi, with a formal description of a new subspecies from New Mexico, United States. Bulletin of the Maryland Herpetological Society. 12 (1): 19
  • Harris, Jr., H. S. 1974. The New Mexican ridge-nosed rattlesnake. National Parks Conservation Magazine 48(3): 22-24.
  • Harris, Jr., H. S. and R. S. Simmons. 1976. The paleogeography and evolution of Crotalus willardi, with a formal description of a new subspecies from New Mexico, United States. Bulletin of the Maryland Herpetological Society 12(1): 1-22.
  • Hartman, Frank A. 1911. Description of a little-known rattlesnake, Crotalus willardi, from Arizona. Proc. US Natl. Mus. 39: 569-570.
  • Holycross, Andrew T.;Smith, Sam W. 1997. Geographic Distribution. Crotalus willardi obscurus. Herpetological Review 28 (2): 97.
  • Hoser, R. 2009. A reclassification of the rattlesnakes; species formerly exclusively referred to the genera Crotalus and Sistrurus. Australasian Journal of Herpetology 3: 1-21.
  • Klauber, L. M. 1949. The subspecies of the ridge-nosed rattlesnake, Crotalus willardi. Transactions of the San Diego Society of Natural History 11(8): 121-137, Sand Diego Society of Natural History, San Diego, California.
  • Klauber, L.M. 1949. The subspecies of the ridge-nosed rattlesnake, Crotalus willardi. Trans. San Diego Soc. Nat. Hist. 11 (8) : 121-140.
  • Klauber, L.M. 1997. Rattlesnakes. Their habits, Life Histories, and Influence on Mankind. University of California Press. 1. Estados Unidos de Norteamerica.
  • Klauber, Laurence M. 1949. The subspecies of the ridge-nosed rattlesnake, Crotalus willardi. Transactions of the San Diego Society of Natural History 11 (8): 121-140.
  • Leopold, A. S.. 1972. Wildlife of Mexico – The Game Birds and Mammals. 2nd and revised edition. University of California Press, Berkeley, California. xvi + 568 pp.
  • Marshall, Jr., J. T. 1957. Birds of Pine-Oak Woodland in Southern Arizona and Adjacent Mexico. Pacific Coast Avifauna 32. Cooper Ornithological Society, Berkeley, California. 125 pp + 2 pl.
  • McCranie, J.R. & Wilson, L.D. 1979. Commentary on taxonomic practice in regional herpetological publications: a review of the rattlesnakes with the description of four new subspecies [by HARRIS & SIMMONS 1978]. Herpetological Review 10 (1): 18-21.
  • McDiarmid, R. W., Campbell J. A., & Touré T'S. A. (1999). Snake species of the world: A taxonomic and geographic reference.. 1, 511. Washington, DC: The Herpetologists' League.
  • McDiarmid, Roy W., Jonathan A. Campbell, and T'Shaka A. Touré. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. xi + 511
  • McDiarmid,R.W.; Campbell,J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. Herpetologists’ League, 511 pp.
  • Meek, S. E. 1905(1906). An annotated list of a collection of reptiles from southern California and northern Lower California. Field Columbian Museum Publication 104, Zoological Series 7(1): 1-19. Field Columbian Museum of Natural History, Chicago, Illinois.
  • Meek,S.E. 1905. An annotated list of a collection of reptiles from southern California and northern lower California. Field Columbian Mus. Publ. Zool. 7 (1): 1-19
  • Meek,S.E. 1905. An annotated list of a collection of reptiles from southern California and northern lower California. Field Columbian Mus. Publ. Zool. 7 (1): 1-19.
  • Meik, Jesse M and André Pires-daSilva. 2009. Evolutionary morphology of the rattlesnake style. BMC Evolutionary Biology 2009, 9:35.
  • Paratype: Klauber, L. M. 1949. Trans. San Diego Soc. Nat. Hist. 11 (8): 128.
  • Rado, T.A. & Rowlands, P.G. 1981. A range extension and low elevational record for the Arizona Ridgenose Rattlesnake (Crotalus w. willardi). Herpetological Review 12 (1): 15.
  • Savage, J. M.. 1966. The origins of and history of the Central American herpetofauna. Copeia 1966(4): 719-766.
  • Stebbins,R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston.
  • Swarth, H. S. 1921. The type locality of Crotalus willardi Meek. Copeia 1921(100): 83.
  • THIRKHILL, L. S., AND B. L. STARRETT. 1992. Geographic distribution: Crotalus willardi willardi. Herpetological Review 23:124.
  • Uetz P. (2013). TIGR Reptile Database (version Oct 2007). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
  • Van Devender, T. R. 1992. Thoughts on the Evolution of Southwestern Desert Reptiles. Pp. 143-148 IN The Collected Papers of the Tucson Herpetological Society: 1988-1991. Tucson Herpetological Society, Tucson, Arizona.
  • Winchell, S. 2007. Klapperschlangen! Die Gattung Crotalus. Reptilia (Münster) 12 (4): 18-25.
  • ¯¯¯¯ and R. S. Simmons. 1976. The paleogeography and evolution of Crotalus willardi, with a formal description of a new subspecies from New Mexico, United States. Bulletin of the Maryland Herpetological Society 12(1): 1-22.
  • ¯¯¯¯. 1958. Evolution of the Madro-Tertiary geoflora. Botanical Review 24(7): 433-509.
  • ¯¯¯¯. 1979. Age and origin of Sonoran Desert Vegetation. Occasional Paper 132, California Academy of Sciences, San Francisco, California. 74 pp.
  • ¯¯¯¯. 1982. The Enigma of the Central American Herpetofauna: Dispersal or Vicariance? Annals of the Missouri Botanical Gardens 69(3): 464-557.

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