ANSC 1001 Lecture Notes - Lecture 15: Estrous Cycle, Calf Roping, Breed Registry
Document Summary
About size of a fox, 2 feet long, 8 inches tall at withers. Long skull with 44 low crowned even teeth without cement. Carried its weight on central pad like a dog. Well adapted to living in forested swampy environemnt. Well adapted to living in forested and swampy environment. Teeth suitable for grazing on the prairie. Greater speed, endurance for finding forage, water, protection, survival; for escaping predators, and find food and water ; no longer hid, but now could run. Climate of n. america became drier (swamy to a savannah-type condition) 3 hoofed toes on the front and hind, side toes on each leg touching the ground. Long crowned teeth with cement, wider molars for grinding grass. 3 hoofed toes but bones of the leg began fusing together starting to rely on middle toe more. Gave way to at least 19 new grazing horse species merychippine radiation . The 3 major groups included: hipparions, protohippines, true equines.
