"Skeleton of Horse (Equus caballus). fr, frontal bone; C, cervical vertebrae; D, dorsal vertebrae; L, lumbar vertebrae; cd, caudal vertebrae; sc, scapula; pe, pelvis; ma, mandible; hu, humerus; ra, radius; cp, carpus; mc, metacarpus; fe, femur; tib, tibia; ca, calcaneum; tar, tarsus; mt, metatarsus; p, phalanges." -Whitney, 1911

Horse Skeleton

"Skeleton of Horse (Equus caballus). fr, frontal bone; C, cervical vertebrae; D, dorsal vertebrae; L,…

The lower jaw and teeth of the Megatherium, elephant sized sloth. The teeth are quandrangular, or triangular cylinder, shaped and grew during their life time.

Lower Jaw of Megatherium Fossil Skeleton

The lower jaw and teeth of the Megatherium, elephant sized sloth. The teeth are quandrangular, or triangular…

A full fossil skeleton of the Megatherium, an elephant sized ground sloth. The animal was extinct during the Pleistocene, and found in Buenos Aires. The shape of the skull suggests that the animal is an ancestor of the sloth and anteater.

Full Megatherium Fossil Skeleton

A full fossil skeleton of the Megatherium, an elephant sized ground sloth. The animal was extinct during…

Illustration showing the upper molar teeth of the megatherium, a giant sloth. The teeth were 7 to 8 inches inside the gums.

Upper Molar Teeth of Megatherium Fossil Skeleton

Illustration showing the upper molar teeth of the megatherium, a giant sloth. The teeth were 7 to 8…