Ardi’s skull was instrumental in determining that she was bipedal and proved that she had a small brain, a less-protruding muzzle, and a short cranial base. Pelvis and Limbs Now let’s move down the skeleton and talk about Ardi’s pelvis, hands and feet. Ardi’s pelvis and limbs were the major indicators that she was bipedal but was also able to move through the trees like an ape. Jill Neimark’s article describes how the upper blades of Ardi’s pelvis, the ilium, are shorter and broader than in apes which would have lowered her center of mass so that she could balance on one foot when she walked. In contrast the lower part of her hip was powerfully primitive like an ape adapted for climbing.
For instance the frog and toad both have bulging eyes; however, the frogs’ eyes are slightly bigger than the toads. As you read on you will learn the differences and similarities between the frog and toad. There are 2000 known species of the frog compared to the 300 kinds of toads. A frog is a small, slim, four legged amphibian with smooth skin and long powerful hind legs with webbed feet. The biggest frog is the Giant frog, sometimes called “Goliath Frog,” in West Africa.
It had long legs and it a wide skull with lots of power in its bite. Albertosaurus is considered by many scientists to be the best known of the tyrannosaurs. A number of nearly complete skeletons, two adults and a juvenile, have been found. There are two recognized species and several in dispute. It is sometimes referenced as a transitory animal, a creature on its way to evolving into T. rex, but it appears that it was extremely successful and longer lived than the Tyrannosaurus
For example, a healthy male that is 20 inches would weigh 49-55 pounds. The head is fine to not be heavy, while the eyes are neither small, round, nor hard in expression. The eyes are also set deep in their sockets. The ears however, are on the side of the skull, about eye level. The skull is to be medium length, broad, flat on top, and rounded on the sides and back.
Introduction As our closest living ancestors, bonobos (Pan Americus) and chimpanzees (Pan troglodytes) have often been used as an ancestral model to study social and cultural hominoid behavior. Chimpanzees and Bonobos' DNA differs only 1% from humans yet their social behavior is very primitive and different compared to humans. Molecular studies indicate that humans, chimpanzees, and bonobos are very closely related in a lineage that split into hominid and Pan lines approximately 6-7 million years ago, possibly following a divergence from the gorilla lineage about 1– 2 million years earlier (Caccone and Powell, 1989). Chimpanzees are great apes, under the Homo lineage, that have been known for their male dominant, meat eating and generally violent culture. Meanwhile bonobos, also great apes, are on a completely different behavior spectrum, they are a female dominant, more peaceful, and heavily sexually oriented society.
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.
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.
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, their brain-to-body size ratio is smaller than that of anthropoid primates, and among many other traits they share with other strepsirrhine primates, they have a "wet nose" (rhinarium). Lemurs are generally the
Diprotodon - (Diprotodon Optatum) Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Diprotodontia Family: Diprotodontidae Genus: Diprotodon The Diprotodon, meaning two front teeth, was the largest ever marsupial. The finding of fossils in Lake Callabonna in South Australia indicates that they became extinct around 40,000 to 25,000 years ago. It was 3m long from head to tail and stood 2m tall from feet to shoulder and weighed something in the region of 2500kg. Inhabiting dense forests, opens woodland and general scrub he Diprotodon could adapt to many environments. They were well adapted to eating plants as they had sharp front incisors and claws, which developed and grew endlessly throughout life, were well suited to chewing off pieces of vegetation and digging up roots.
The Merychippus were developed around 17 million years ago. These showed the most drastic yet change from their ancestor the Eohippus. The Merychippus had three toes on its front legs, but only stood on the middle on which was much larger than the other two. The two sides toes weren’t used for standing at all, as they didn’t touch the ground. The Merychippus was also tallest yet, reaching 40 inches.