Compare & Contrast: Egypt & China. Ancient Egypt and ancient China had many cultural differences and similarities. While Chinaâs form of government is monarchy, Egyptâs is theocracy. As for their religious beliefs, even though theyâre both polytheistic, they have different Gods. Another difference in the two civilizations is the environment.
Palaeontologists have found what is likely to be the oldest known dinosaur, filling in a yawning evolutionary gap. A study in Biology Letters describes Nyasasaurus parringtoni, a new species from 10-15 million years before the previous earliest dinosaur specimens.
Prior to the new analysis, the oldest known dinosaur fossils belonged to small, lightly built, meat-eating creatures found in South America that dated to around 230 million years ago. (See pictures: Oldest Dinosaur Nests Found in South Africa.) Oldest Dinosaur Still a Mystery. Very little is known about Nyasasaurus. Based on the fossils, scientists estimate it was between 6.5 to 10 feet (2 to 3 meters) long, including its tail. But no skull bones have been found yet, so it's unclear what the animal ate or even whether it walked on two legs or four.