Ovibos moschatus.,The Musk Ox, named for the musky odor emitted by the males of this species, once ranged over much of Asia and North America. Now this prehistoric left-over is mainly inhabits regions of the arctic within Canada and Greenland. Historically, and before being hunted to extirpation, Alaska also supported populations of Musk Ox. Although a member of the Bovidae family, the Musk Ox is not a true "ox" but are more closely related to sheep. This gregarious (herd-dwelling) species grazes on grasses, reeds, sedges, and other arctic ground plants. Musk Ox, when threatened, will form a circle around the herd's young. With their stocky build and massive horns as a primary ring of defense, there are few predators capable of preying on this species.
*Specifications: CLASS: Mammalia ORDER: Artiodactyla FAMILY: Bovidae Origin: North America
* Skull Length: 45 cm (17.7 in) Average Horn Length: 60 cm (23.6 in)
Eusmilus Skull with base
Scientific Name: Eusmilus sicarius
Location: South Dakota, USA
Formation: White River Member, Brule Formation
Age: Oligocene, 30 MYA
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Australopithecus africanus., designated STS 5, was discovered by Robert Broom and John T. Robinson in Sterkfontein, Transvaal, South Africa in 1947. Although originally considered female, study of the roots of the canine teeth has cast serious doubt on it's gender, leading most to believe it is,in fact, from a sub-adult male instead.
*Skull Length: 19 cm (7.5 in)
Austrolopithecus afarensis., Lucy is, quite possibly, the most well-known fossil hominid. Discovered by Donald Johanson and Tom Gray in 1974 at Hadar, Ethiopia, Lucy is dated at 3.2 million years old. This specimen, a 40% complete skeleton of an adult female, gave sufficient evidence that A. afarensis was a bipedal species that walked upright. Lucy, scientifically known as AL 288-1, was named after the Beatles song "Lucy in the Sky with Diamonds."
*Skull Lengh 7.2in.
KNM ER 1470 Skull - First discovered in Koobi Fora, Kenya is 1972, Homo rudolphensis has consistently been the subject for debate. Many anthropologists believe this specimen to belong to the Australopithecine genus while some favor Homo habilis as its species. There are many features used to distinguish this sole specimen (KNM ER 1470) from both of these groups, but a consensus has yet to be reached.
*Specifications: CLASS: Fossil Hominids ORDER: Fossil Hominids FAMILY: Fossil Hominidae Origin: Kenya
*Skull Lenght 7.3in.