but when they are found, they show details about the soft body parts, such as gills, antennae and legs. Beautifully preserved body fossils have been found in the Burgess Shale in the Canadian Rocky Mountains.
Before the dinosaurs, by 200 million years! They are said to have originated from a tiny fish with the shape of a leaf that lacked eyes, fins, and bones. Eventually, these fish evolved into the two major families of fish that exist today. While fishing for swordfish in the southern ...
ANIMAL EXTINCTION Many animals have disappeared during the long history of the earth. The most famous of these animals are dinosaurs. They lived on the earth tens of millions of years ago. long before humans came into being" and their future seemed secure at that time. There were many differ...
which were here long before us and survived the disaster that wiped out the dinosaurs. Still, it is comforting to realize that other species besides our own can stand back and assess the world around them, even if their horizons
Millipedes are ancient arthropods that have existed on earth for over 400 million years, long before the dinosaurs. They belong to the class Diplopoda and are known for their long and cylindrical body segmented by multiple legs. Despite their name, millipedes do not have a thousand legs, wit...
Lobsters and other filter-feeding crustaceans first emerged millions of years before dinosaurs, and in fact the creatures we call horseshoe crabs (more closely related to spiders than modern crabs) appeared around 450 million years ago. But true crabs are a dinosaur-era phenomenon, as they arrived...
Dinosaurs were once the biggest land animals on the earth. They lived millions of years ago,long before people populated the world. They belong to the family of cold-blooded animals known as reptiles(爬行动物). The word"dinosaur" means "terrible lizard(蜥蜴)."There were many different kinds ...
(disappear) during the history of the earth,of 2. the most famous are dinosaurs.They lived on the earth long before humans 3. (come) into being.There were many different species of dinosaurs and a number of them used to live in China.The eggs of twentyfive species 4. (find) in ...
They lasted about 180 million years through the Triassic, Jurassic, and Cretaceous periods. The large variations among the dinosaurs allowed them to survive Earth’s harsh environments when all the continents were still together. It is possible that they experienced continental drifting before they ...
What was alive with dinosaurs? No! After thedinosaursdied out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) werealiveat the time of thedinosaurs. What is the closest living animal to a dinosaur?