Humans showed evidence of bipedalism while apes remained quadrupeds. A number of changes in our bodies were related to the evolution of this form of locomotion. Unlike apes, our arms are relatively short and weak compared to our legs. Humans showed a reduction in their dentition (small canine teeth) as compared to that of apes. The modern human brain is three times larger in volume than those of the great apes.
It had a very short, deep 'brachycephalic' skull and lower jaw, and eyes that were partly forward-facing (giving it a primate-like appearance). The lower jaws (dentaries) were massive and fused or ankylosed, and a 'chin' was developed. Both upper and lower incisors were small, and would have been used to nip vegetation. The last premolar in Procoptodon was complex and late-erupting. The ape-like molar teeth of Procoptodon were brachyodont (low-crowned) and tended to develop additional longitudinal enamel folds.
There was a minor mass extinction toward the end of the Jurassic period. A stegosaurus had a large, flat, bony, triangular plates along its back . As well as a heavy, spiked tail for protection. A stegosaurus also had a very small head with a tiny brain and toothless beak . Their brain size can be compared to a size of a walnut.
Chris Chapman Dr. Karen Keane-Hines Anatomy &Physiology II MANATEE Long ago manatees were mistaken for mermaids or sirens-luring sailors to their deaths on rocky shores. So the order of these marine mammals has been named, Sirenia. There are five species: Amazonian, West African, and West Indian with two sub-species the Florida and Antillian Manatee. All have front flippers and a solid, flat, paddle shaped tail. Another related species, the Dugong, has a fluked tail.
The vervet monkey is simply known as vervet. It is a common name of species chlorocebus pygerythrus, which is an old world monkey of family carcopithecidae. There are several subspecies of vervet monkeys. Generally the body is a greenish-olive or silvery-gray. The face, ears, hands, feet and tip of the tail are black, but a conspicuous white band on the forehead blends in with the short whiskers.
Species occur in over 400 in general. There are many more species of plant –eating dinosaurs named than carnivores because carnivores were fewer in number. Where did dinosaurs live? Dinosaurs lived everywhere on earth, including the South Pole, which had no ice then. Do we have any living dinosaurs today, like the coelacanth or Komodo dragon?
The cheetah, also known as Acinonyx jubatus in the scientific world, is one of the most speedy, agile, and fiesty animals on land. It is the oldest feline out of the thirty seven different species of cats, originating over four million years ago. With the start of the last Ice Age, approximately 10,000 years ago, all the cheetah in North America, Europe, and most of those in Asia and Africa perished. Fossils have been discovered in what is now Nevada, Wyoming, and Texas. From those that did survive this epic Ice Age, and from evolution of closely related animals, descended the cheetah that we recognize today.
Emperor Penguins can dive much further than any other penguin. Food intake of the emperor penguin Intake varies with the quantity and variety of food available from different areas at different times of the year. An adult penguin eats 2–3 kg per day. When they need to fatten up before the start of the breeding season, they can eat as much as 6 kg per day.Breeding adults really have to fill up their stomachs before they return to the colony. They need to feed their chicks and the colonies are often a long way from the fishing grounds.
are the most diverse group of vertebrates besides perciform fish.and heights of General description Using one of the above definitions, dinosaurs can be generally described as archosaurs with hind limbs held erect beneath the body. This posture is due to the development of a laterally facing recess in the pelvis and a corresponding inwardly facing distinct head on the femur. Paleontologists think that Eoraptor resembles the common ancestor of all dinosaurs; When dinosaurs appeared, they were not the dominant terrestrial animals. The terrestrial habitats were occupied by various types of archosauromorphs and therapsids, like cynodonts and rhynchosaurs. Their main competitors were the pseudosuchia, such as aetosaurs, ornithosuchids and rauisuchians, which were more successful than the dinosaurs.
[4] A 2007 report shows 239 pandas living in captivity inside China and another 27 outside the country. [9] Wild population estimates vary; one estimate shows that there are about 1,590 individuals living in the wild,[9] while a 2006 study via DNA analysis estimated that this figure could be as high as 2,000 to 3,000. [10] Some reports also show that the number of pandas in the wild is on the rise. [11][12] However, the IUCN does not believe there is enough certainty yet to reclassify the species from Endangered to Vulnerable. [1] While the dragon has historically served as China's national emblem, in recent decades the panda has also served as an emblem for the country.