Bird and Pets

Posts Tagged ‘Equus caballus’

The horse, Equus caballus scientific name perissodactyle is a mammal of the family equidae, herbivorous quadruped. The origin of the horse goes back to more than 55 million years ago, when inhabited Hyracotherium (or Eohippus), from which descend all the members of the genus Equus, in the lands of North America.

The animal was a quadruped Eohippus had a size ranging between 20 and 40 cm high, with four toes on the forelegs and three in the rear. During the evolution up to the genus Equus, approximately one million years, the size of the animal grew, developed a different teeth, increasing the length, especially in his extremities, and became a quadruped monodáctilo with tips covered helmets and walking on a single finger.

The modern horse is even greater now that the first specimens of the genus Equus, has raised about 1.6 meters, the forelimbs have the radius and ulna bones fused resulting in a single bone, as has happened with tibia and fibula which prevents the ends to rotate laterally.

The bones of the horse’s head are long, and the face are twice the length of the skull. The jaw is also long and has a wide, flat surface at the bottom of the back. Horses have a minimum of 36 teeth divided between 12 incisors and 24 molars, since most of the males also have 4 dogs. The spine is made up of 51 vertebrae.

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