Of course we all know about the size of dinosaurs, but what about rodents the size of bison, sea scorpion bigger human, a frog that big as beach balls, a penguin human size small adult, a marsupial-like ground-sloth-pounds 1,000, and a shark that may have grown more than 50 feet and weighing up to 30 times more than that now? Fossils found in coal mine northeast Colombia Cerrejon show reptile, nicknamed cerrejonesis Titanoboa, has a length of 42 feet (13 meters) and weighs 2500 pounds (1135 kilograms). 'That's longer than a city bus and ... heavier than cars, "said study lead author Jason Head, a fossil-snake expert at the University of Toronto Mississauga in Canada and a researcher with the Smithsonian Institution. Previously, the largest snake is Gigantophis garstini, which has a length of 36 to 38 feet (11 to 11.6 meters). The snake lives in Africa
2. GIANT RATS
Skull was discovered in Uruguay by an amateur fossil hunter in between a rock cliff falls in the area of San José. The findings showed that paleontologists belonging to a species of bull-size, which has since been named Josephoartigasia monesi, 'National Geographic News. megarodent lived in lowland rain forests between two and four million years ago, perhaps by using a very large teeth to fend off sharp fangs and a giant cat.
3. BIGGEST FROG IN MADAGASCAR
Scientists working in Madagascar have discovered the largest frog that ever lived. The bad-tempered Beelzebufo or 'devil frog' is' a rather scary-sized animal with a beach ball, 16 inches (41 centimeters) tall and weighs about 10 pounds (4.5 kilograms). "
4. GIANT SEA Scorpion
A claw fossil found in Germany's largest insects ever known. Jaekelopterus rhenaniae measured length, 8.2 feet (2.5 meters), the scientists estimated based on the long claw that is 18-inch (46 centimeter) The discovery shows that arthropods-animals such as insects, spiders, and crabs, which have the outer frame hard, jointed limbs, and segmented bodies-once grew much larger than previously thought, said paleobiologist Simon Braddy from the University of Bristol in England. The new fossil is found is estimated at least longer than the previously known prehistoric sea known as the scorpion, a group called eurypterids. Poschmann found the claw fossil in a quarry near Prum in Germany. Search Amazon.com for National Geographic.
5. LARGEST DENTAL SHARK
Shark had strongest bite of most of the creatures that ever lived, National Geographic News reported in August 2008 'bite is powerful enough to destroy a car and go beyond the great white shark and even tyranosaurus rex' Known mostly from great teeth left, Carcharodon Megalodon first appeared in Earth's oceans about 16 million years ago (in the Neogene period) and eat the giant prehistoric turtle, and whales. 'Strategy kill Megalodon bite the tail and fins of the great whales' said lead researcher Stephen Wroe from the University of New South Wales in Australia.
6. GIANT kangaroo
According to a new study of man is ultimately responsible for the extinction of giant kangaroos and other large marsupilai at 40,000 years ago. The Protemnon kangaroo-like giant, long-necked leaf browser, survived in Tasmania until at least 41,000 years ago-far more than previously thought and up to 2,000 years after the first human settlers are believed to have arrived-according to new radiocarbon and luminescence dating of fossils, some of which were identified by previous caver.Penelitian concluded that the giant Tasmanian animals have disappeared at the time of humans across a temporary land bridge to the island 43,000 years ago. The new findings appear in the journal Proceedings of the National Academy of Sciences.source : national geographic