rex. This dinosaur looked like a smaller, less muscular version of Tyrannosaurus. As an early member of the tyrannosaur family, Albertosaurus was the final design for the large meat-eating dinosaurs. It only had two fingers on its hands, which were at the end of short arms. It had long legs and it a wide skull with lots of power in its bite.
These eight bears started evolving from a common ancestor 30 million years ago. Out of the eight species of bear left, the Giant Panda is the oldest. It diverged about 30 million years ago from its common ancestor along with the procyonids (the raccoon family). Pandas are usually 4-6 feet tall. They can weigh up to 350 pounds.
In the year that followed, the skeleton was shipped to the Cabinet of Natural History in Spain, where a scientist named Juan Bautista Bru assembled and illustrated it (Switek 1 ).French anatomist, George Cuvier named this spectacular animal Megatherium americanum after s observing the illustration. He went ahead and appraised the animal as an extinct creature of the small arboreal sloths of South American rainforests (Switek 1 ) Characteristics of the Megatherium Weighing almost as much as an African bull elephant, it is believed that the Megatherium was not only one of the largest mammals, but also the most impressive animals to walk on the earth’s surface. This massive ground sloth was covered in long, heavy dark hair. Despite the fact that it primarily walked on its fours, its footprints reveal that the animal could also walk on its hind legs, thus assuming a bipedal stance like the bear (Switek 1). The bones in its feet were poorly arranged, thus making it impossible for the animal to place its feet flat on the ground.
In the NOVA Alien from earth the film talks about controversy between scientist if the hobbit is real or not. Homo floresiensis is the name given to the hobbit by the Dutch and Indonesian scientists. The hobbits lived recently enough to have co-existed with modern humans. The bones were between 10,000 and 95,000 years old. The hobbit brain is smaller by a modern human's brain.
The Tyrannosaurus Rex also known as T-Rex, lived during the late cretaceous period which is about 70 million years ago. T-Rex lived along river valleys in North America. This dinosaur was 40 feet long and 20 feet tall. The T-Rex was a carnivore dinosaur which meant it ate nothing but meat. It will eat so many pounds of meat because it had powerful jaw muscles.
Since that time, lemurs have evolved to cope with an extremely seasonal environment and their adaptations give them a level of diversity that rivals that of all other primate groups. Until shortly after humans arrived on he island around 2,000 years ago, there were lemurs as large as a male gorilla. Today, there are nearly 100 species of lemurs, and most of those species have been discovered or promoted to full species status since the 1990s; however, lemur taxonomic classificationis controversial and depends on which species concept is used. Even the higher-level taxonomy is disputed, with some experts preferring to place most lemurs within the infraorder Lemuriformes, while others prefer Lemuriformes to contain all living strepsirrhines, placing all lemurs in superfamily Lemuroidea and all lorises andgalagos in superfamily Lorisoidea. Ranging in size from 30 g (1.1 oz) to 9 kg (20 lb), lemurs share many common, basal primate traits, such as divergent digits on their hands and feet and nails instead of claws (in most species).
However, the arguments for the Out of Africa theory seem to be flawed far more than those of the Multiregional theory. The Multiregional theory states that the hominid H. erectus. Migrated out of Africa through the north approximately one million years ago and spread throughout the rest of the world. After some time several populations of H. erectus became isolated and each followed a similar path of evolution until they developed into archaic humans. Such small populations have a selective gene pool and although each group may have proceeded to develop different rates they all managed to follow the same evolutionary lines.
Hominid Development of Bipedalism There are many theories about why bipedalism came to be selected for by evolutionary process. The fossil record indicates that hominids started to use bipedal locomotion as their primary method of travel around 11 million years ago. Darwin's ideas indicate that changes in an organism usually respond to change in environment. People who study changes in the Earth have noted that during this time Africa was going through some changes that might have put pressure on these primates to change. ”Gradually, the African rain forests, deprived of intense humidity and rainfall, dwindled in extent; areas of savanna (grasslands) and scattered deciduous woodlands became more common (Ember, Ember, Peregine, 2011).
About half a million years ago human fossils diverged from the Homo erectus in their enlarged, rounder, and less angular skulls. It is interesting that at this time the human populations of Africa and Western Eurasia began to diverge from each other and from East Asian populations in skeletal details. Human history kicked off around 50,000 years ago, a period which Diamond calls the Great Leap Forward. The earliest signs of the Great Leap Forward were found in East African areas with standardized stone tools and first preserved jewelry. Similar
These explorers led the way by dominating with use of the military tactics and technological intelligence. But this documentary dates back to even further in history tracing almost all of the worlds roots back to different sections of Africa. Neanderthals date back to over 300,000 years ago and were first settled in Europe. Neanderthals and humans weren’t too different from each other but Neanderthals were a lot bigger, but the Neanderthals eventually died and humans advanced. We can trace back large portions of the world’s citizens to Africa and it is also said that we all descend from Africa itself as homosapiens.