[...]... known as produced as an animal or a tree hunt and kill other animals for food the air grows Animals and plants may grow at different speeds at various times prey an animal that is hunted and browse to eat leaves of the year, and this is seen as layers eaten by a predator of light and dark colors in the bone camouflage a natural color or the wood pterosaur a member of a group of flying reptiles, related... Probably the best way of communicating over a great distance is by using sound If you delicate ear bones still intact These show that this dinosaur at least could hear very well Corythosaurus Lambeosaurus Tsintaosaurus Corythosaurus belonged to a group of dinosaurs called the duckbills These all had a strangely shaped head with a ducklike beak Nasal cavity Some types had a very flattened head, and... that the climates cooled naturally Toward the end of the Age of Dinosaurs, the area of sea at the end of the Age of Dinosaurs One effect of this may became less than it had been for a long time This would have been that dinosaur babies of only one sex were have led to a change in climate in which the air born, as can happen in crocodiles and turtles today As a temperature would have risen by several... half a mile through the rainforests Dinosaurs may have been able to communicate with one another by making similar kinds of sounds The howler monkey of South and Central America has a very loud voice Using a voice box in its throat, it can make a noise that can be heard for almost... would have biggest dinosaurs been like a big Diplodocus Ultrasaurus may have weighed 1 00 tons It would have been like a big Brachiosaurus Another incomplete skeleton named Seismosaurus probably belonged to an Blue whal e - A largest living animal GROUP LIVING There are advantages to living in groups The It was not just the plant-eaters that went main one is safety If there are a lot of you, an about... Beneath a bed of twigs The young dinosaurs had teeth that were and leaves in a Maiasaura worn from feeding, but their limb bones were nest, the young dinosaurs hatch out A nestful of hatchling Maiasaura is a too weak to have allowed them to go looking for food This shows that the youngsters must wriggling mass of have stayed in the nest until they were partly squawking noise At about grown They must have... plant-eaters were purely cold­ skeleton lacked a tail and dinosaur The adult was blooded, they may have reached ages of 200 was only 8 inches long It perhaps a long-necked plant­ was a baby's skeleton eater about 1 0 feet long years or more How fast dinosaurs grew is difficult to tell from fossil bones Studies of the Maiasaura nests in Montana suggest that these two-footed plant-eaters were only about... or pattern that allows an animal to blend in with its hatchling an animal that is newly dinosaurs, that flew using wings of surroundings so that it will not be hatched from its egg skin during the Triassic, Jurassic, noticed and Cretaceous periods horn a tough, shiny substance cast the shape that results when the made of the same material as hair space inside a mold is filled with a or fingernails and... their and Australia species evolved changed over a number of generations, producing a new lifes pans the lengths of time species animals live fossilized to be preserved in the mammals vertebrate animals that amphibians, reptiles, birds, and rocks as a record of having once produce live young and feed them mammals We, as mammals, are lived on Earth on milk Modern mammals include vertebrates vertebrate an .           A Closer Look By Dougal Dixon      .