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Equus conversidens, or the Mexican horse, was a Pleistocene species of horse, now extinct, that inhabited North America. Life restoration The holotype of Equus conversidens , a partial palate, was unearthed in Pleistocene deposits northeast of Mexico City, Mexico .
At the other extreme, an early member of the order, the prehistoric horse Eohippus, had a withers height of only 30 to 60 cm (12 to 24 in). [5] Apart from dwarf varieties of the domestic horse and donkey, living perissodactyls reach a body length of 180–420 cm (71–165 in) and a weight of 150 to 4,500 kg (330 to 9,920 lb). [6]
The James Wild Horse Trap in Nye County, Nevada, near Fish Springs, is a historic site that is listed on the U.S. National Register of Historic Places.It was the location of a corral and fences used to capture wild horses, built out of dead Juniper trees.
This means that larger-bodied species (e.g., elephants) have lower mass-specific metabolic rates and lower heart rates, as compared with smaller-bodied species (e.g., mice). The straight line generated from a double logarithmic scale of metabolic rate in relation to body mass is known as the "mouse-to-elephant curve". [ 24 ]
Pony trap in Brisbane, Australia, 1900. Pony and trap in northern England. Trap_or_cart,_c_1903. A trap, pony trap (sometimes pony and trap) or horse trap is a light, often sporty, two-wheeled or sometimes four-wheeled horse- or pony-drawn carriage, usually accommodating two to four persons in various seating arrangements, such as face-to-face or back-to-back.
Przewalski's horse (/(p) ʃ ə ˈ v ɑː l s k iː z, ˌ p ɜːr ʒ ə-/ (p)shə-VAHL-skeez, PUR-zhə-; [3] Russian: [prʐɨˈvalʲskʲɪj] (Пржевальский); Polish: [pʂɛˈvalskʲi]; Equus ferus przewalskii or Equus przewalskii [4]), also called the takhi (Mongolian: Тахь), [5] Mongolian wild horse or Dzungarian horse, is a rare and endangered horse originally native to the ...
Hagerman Fossil Beds National Monument is a Pliocene-age site near Hagerman, Idaho.The 4,351-acre (17.61 km 2) Monument is internationally significant because it protects one of the richest known fossil deposits from the Blancan North American Land Mammal Age. [3]
The hagfish skeleton comprises the skull, the notochord, and the caudal fin rays. The first diagram of the hagfish endoskeleton was made by Frederick Cole in 1905. [ 44 ] In Cole's monograph, he described sections of the skeleton that he termed "pseudo-cartilage", referring to its distinct properties compared to jawed chordates.