nounpl. -·horns· or -·horn·
any of a number of sheep with large horns, esp. a large, wild, hairy species (Ovis canadensis) of the Rocky Mountains
river in WC Wyo. flowing northward into the Yellowstone River in S Mont.: c. 450 mi (724 km)
Origin of Bighornafter the bighorn sheep
- The peccary (Tayassu angulatum), the armadillo (Tatu novemcinctum), the civet-cat (Bassariscus astutus flavus), the Mexican bighorn (Ovis mexicanus) and the jaguar are Mexican species found in southern or south-western Texas.
- Labiatus), skunk (Mephitis, Spilogale and Conepatus), marten, several species of opossum (including a pigmy species of the Tres Marias islands), sloth, two species of ant-bear (Myrmecophaga tetradactylus and Cyclothurus didactylus), armadillo (Dasypus novemcinctus), a small arboreal porcupine (Synetheres mexicanus), the kinkajou (Cercoleptes caudivolvulus), three species of deer - the white-tailed Cariacus toltecus, the little black-faced brocket, Coassus rufinus, which is also found in Brazil, and the Sonora deer (Odocoileus couesi) - the Mexican bighorn (Ovis mexicanus) of Chihuahua, at least two species of hare (Lepus calotis and L.
- Flanking strata are even better exhibited in the Bighorn Mountains, the front range of northern Wyoming, crescentic in outline and convex to the northeast, like the Laramie Range, but much higher; here heavy sheets of limestone arch far up towards the range crest, and are deeply notched where consequent streams have cut down their gorges.
- Different stages of cirque development, with accompanying transformation of ioountain shape, are finely illustrated in several ranges around the headwaters of the Arkansas river in central Colorado, where the highest summit of the Ro~k~ Mountains is found (Mt Massive, 14,424 ft., in the Sawatch range); and perhaps even better in the Bighorn range of Wyoming.
- Its eastern part is drained north-eastward through a gorge that separates the Laramie and Rattlesnake (Front) ranges by the North Platte river to the Missouri-Mississippi; its western part, where the basin floor is much dissected, often assuming a bad-land expression, is drained southward by the Green river, through a deep canyon in the Uinta Ran~e to the Colorado river and then to the Pacific. The Bighorn basin has a moderately dissected floor, drained north-eastward by Bighorn river through a deep canyon in the range of the same name to the Missouri.