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Crotalus cerastes, known as the sidewinder, horned rattlesnake or sidewinder rattlesnake, [3] is a pit viper species belonging to the genus Crotalus (the rattlesnakes), and is found in the desert regions of the Southwestern United States and northwestern Mexico. Like all other pit vipers, it is venomous.
Crotalus cerastes cercobombus, commonly known as the Sonoran Desert sidewinder [2] or Sonoran sidewinder, [3] is a pitviper subspecies [4] found in the eastern part of the Sonoran Desert in the southwestern United States and northwestern Mexico. Like all pitvipers, it is venomous. The subspecific epithet means buzzertail. [3]
Sidewinding in a newborn sidewinder rattlesnake. Yellow regions are lifted above the sand and in motion at the time of the photo, while green regions are in static contact with the sand. Blue denotes tracks. Scale imprints are visible in the tracks, showing that the snake's body is static during ground contact. Tracks of a sidewinder in the sand.
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Cerastes is a genus of small, venomous vipers found in the deserts and semi-deserts of northern North Africa eastward through Arabia and Iran. [2] [3] Three species are currently recognized by ITIS, [4] and an additional recently described species is recognized by the Reptile Database. [5]
Early snakes had vestigial limbs, with the oldest-known fully limbless snake living around 85 million years ago, according to George Washington University evolutionary biologist and study co ...
Colorado Desert sidewinder. This form of Crotalus cerastes has the following distinguishing characteristics: the proximal rattle-matrix lobe is black in adult specimens, the ventral scales number 137–151/135–154 in males/females, the subcaudals number 19-26/14-21 in males/females, and there are usually 23 rows of midbody dorsal scales.