Lagenorhynchus obliquidens., Pacific White-sided Dolphin Skull - This gregarious species ranges throughout much of the temperate Pacific Ocean. This species can be found in groups numbering 10 to 100 individuals and occasionally intermingle with Risso's and Northern Right whale dolphins. This carnivore feeds primarily on cephalopods and schooling fish such as herring, anchovies, and sardines.
Specifications: CLASS: Mammalia ORDER: Cetacea FAMILY: Delphinidae Origin: Tropical and Temperate Oceans
*Skull Length: 39 cm (15.4 in)
Archaeopteryx lithographica.,Archaeopteryx, sometimes referred to by its German name Urvogel ("original bird" or "first bird"), is the earliest and most primitive bird known. The name is from the Ancient Greek meaning "feather" or "wing". Archaeopteryx lived in the late Jurassic Period around 150–145 million years ago, in what is now southern Germany during a time when Europe was an archipelago of islands in a shallow warm tropical sea, much closer to the equator than it is now. Similar in size and shape to a European Magpie, Archaeopteryx could grow to about 0.5 metres (1.6 ft) in length. Despite its small size, broad wings, and inferred ability to fly or glide, Archaeopteryx has more in common with small theropod dinosaurs than it does with modern birds. In particular, it shares the following features with the deinonychosaurs (dromaeosaurs and troodontids): jaws with sharp teeth, three fingers with claws, a long bony tail, hyperextensible second toes ("killing claw"), feathers (which also suggest homeothermy), and various skeletal features. The features above make Archaeopteryx the first clear candidate for a transitional fossil between dinosaurs and birds. The first complete specimen of Archaeopteryx was announced in 1861, only two years after Charles Darwin published On the Origin of Species, and it became a key piece of evidence in the debate over evolution.
*Specifications: CLASS: Aves ORDER: Archaeopterygiformes FAMILY: Archaeopterygidae Origin: Solnhofen, Germany *
Skull Length: 5 cm (2.0 in)
Aptenodytes patagonica.The king penguin, reaching nearly 3 feet tall, is second only to the emperor penguin in size. This large flightless bird nests in colonies up to 10,000 individuals. The king penguins range includes Antarctica, the Falkland Islands, Tierra del Fuego, and many other islands throughout the sub-Antarctic. The king penguin feeds on fish, but specializes in eating squid.
CLASS: Aves ORDER: Sphenisciformes. FAMILY: Spheniscidae
Origin: Antarctica Diet: Carnivore
Skull Length: 7.6 in.
The first Australopithecus boisei specimen, originally named Zinjanthropus boisei, was discovered in 1959 by Mary Leaky at the Olduvai Gorge in Tanzania, Africa. A. boisei skulls have been found in Ethiopia, Tanzania, and Kenya.
* Skull Length: 22.5 cm (8.9 in)
Cro-Magnons are recognized as the earliest know race of modern humans, Homo sapiens. Generally considered the earliest European descendants, Cro-Magnons lived between 10,000 and 35,000 years ago. The first Cro-Magnon specimens were discovered in France in 1868 along with many sophisticated tools, artifacts and cave paintings. Cro-Magnons are credited with creating the first calendar nearly 34,000 years ago.
*Skull Length: 20 cm (7.9 in)
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