"Crotalus" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
A genus of snakes of the subfamily Crotalinae, having a hollowed out pit in the maxillary bone between the eye and nostril. Most of the recognized species are found in the southwestern United States and northern Mexico. Several species are found as far north as Canada and east of the Mississippi, including southern Appalachia. They are named for the jointed rattle (Greek krotalon) at the tip of their tail. (Goin, Goin, and Zug: Introduction to Herpetology, 3d ed; Moore: Poisonous Snakes of the World, 1980, p335).
| Descriptor ID |
D017839
|
| MeSH Number(s) |
B01.050.150.900.833.672.125.937.240.500
|
| Concept/Terms |
|
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