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Crotalus molossus at Herps of Texas Archived 2012-07-17 at the Wayback Machine. Accessed 24 February 2007. Black-tailed Rattlesnake at Centennial Museum & Chihuahuan Desert Gardens Natural and Cultural History. Accessed 24 February 2007. Crotalus molossus, Black-tailed Rattlesnake at California Reptiles and Amphibians. Accessed 24 February 2007.
The generic name Crotalus is derived from the Greek word κρόταλον krótalοn, which means "rattle" or "castanet", and refers to the rattle on the end of the tail, which makes this group (genera Crotalus and Sistrurus) so distinctive. [3] As of July 2023, 44 [4] to 53 [5] species are recognized as valid.
The western diamondback rattlesnake [3] or Texas diamond-back [4] (Crotalus atrox) is a rattlesnake species and member of the viper family, found in the southwestern United States and Mexico. Like all other rattlesnakes and all other vipers, it is venomous .
Rattlesnake skin has a set of overlapping scales that cover the entire body, providing protection from a variety of threats, including dehydration and physical trauma. [63] The typical rattlesnake, genus Crotalus, has the top of its head covered with small scales, except, with a few species, a few crowded plates directly over the snout. [64]
Common names: southwestern speckled rattlesnake, [2] Mitchell's rattlesnake, [3] more. Crotalus pyrrhus is a venomous pitviper species [2] found in the southwestern United States and northwestern Mexico. A medium-sized snake, it is found mostly in rocky country, active at night and feeding on small mammals. The coloration is variable and ...
Timber rattlesnake, Crotalus horridus This is a list of all sure genera, species and subspecies of the subfamily Crotalinae, [1] otherwise referred to as crotalines, pit vipers, or pitvipers, and including rattlesnakes Crotalus and Sistrurus.
Crotalus helleri or Crotalus oreganus helleri, also known commonly as the Southern Pacific rattlesnake, [3] the black diamond rattlesnake, [4] and by several other common names, is a pit viper species [5] or subspecies [3] found in southwestern California and south into Baja California, Mexico, that is known for its regional variety of dangerous venom types.
Crotalus mitchellii is a venomous pit viper species in the family Viperidae. The species is endemic to the Southwestern United States and adjacent northern Mexico . The species was named in honor of Silas Weir Mitchell (1829–1914), an American medical doctor who also studied rattlesnake venoms.