b'TetrapodsK-12 EducationTetrapods are a highly diverse group of four-limbed animals that are descended from a common lizard-like ancestor and include living and extinct amphibians, reptiles, birds, and mammals. Some tetrapods live on land such as elephants, frogs, hawks and lions. Some tetrapods have returned to life in the water, such as whales, sea lions, manatees and sea turtles. In response to their environment and needs, an animals form adapted to best serve them. Animal skeletal structures reveal much about an animals environment, ecological niche, behavior, diet, and locomotion. Skulls, teeth, skeletons and postcranial parts provide opportunities to learn about animals, ourselves and the natural world.Bone Clones is pleased to provide osteological material from all of the animals illustrated below, and more. Aquatic Aerial TerrestrialSwimming & Diving Flying & Gliding Crawling, Walking, Running, Jumping, Scaling, Hopping, Leaping, Climbing, & SwingingLOCOMOTIONHorse(SC-125):CursorialDog(SC-344) :CursorialHuman(SC-092) :AmbulatoryTerrestrial adaptation for sustained speed over distance (cursorial locomotion) include:* Adaptation of a digitigrade or unguligrade increases stride length. AnkleWrist * Increased limb bone length with reduction of number of limb bones. Palm Arch* Loss or reduction of the clavicle in mammals allows scapula mobility and Fingersincreased stride length. ToesHoof Paw Hand Plantigrade Digitigrade Unguligradewww.boneclones.com 19'