In comparison with the brachiosaur, at a kamarazavr (stone a pangolin the neck was shorter, and the body, the head and teeth were so powerful and strong. More in proportion looked (a curved pangolin), too having a short neck.
Often the name reflects a find place, for example, in the name Mamenchisaurus hochianensis ( ). Mamench and Hechuan – a place of a find and a mestnostnost in China. Lesothosaurus () is found in Lesotho, in Africa, and Albertosaurus () – in Albert's province, in Canada.
These first land animals of the size of a lizard were also ancestors of all reptiles. Soon among them there were specific groups of animals which adapted to various biological conditions of the environment: predatory and herbivorous, slowly creeping and quickly running, forest and marsh.
It and many other things remain unsolved. Whether they led a gregarious life? Whether brought up the posterity? Postponed eggs or were viviparous? The big pelvic cavity does the last assumption quite probable, but it is insufficient argument.
Really, the ancient bird is intermediate in evolutionary transformation of a dinosaur with hollow bones ( in an ordinary bird. In the course of this development there were no big jumps or steps which would allow to tell: till this moment it indisputable pangolins, reptiles, and further - so undoubtedly birds. It is necessary to consider also that change of separate parts of a body do not occur at the same time: one part undergoes changes earlier, and another later. It is possible to see it and on an ancient bird: feathers and wings - signs obviously bird's, and teeth and a tail, on the contrary, unite it with reptiles. During evolutionary changes there are no sharp borders between the categories "tselurozavr" and "ptitsa". Differentiations are carried out by the person from desire "to bring an order" and to create harmonous classification of animals.
Dinosaurs too endured various changes. Predatory dinosaurs met more and more seldom, only separate types could survive and continue the development. Prickly dinosaurs died out completely. They were succeeded armor-clad, and then horned. On a row with the klyuvonosy there was a large number of utkonosy dinosaurs.
There were among them dexterous hunters and blood-thirsty predators, but there were also harmless herbivorous animals. But one major feature inherent in all their types, is evident at once: all of them were land animals! Their extremities settled down from below cases, but not on each side, as at the majority of reptiles. Therefore it is possible to call dinosaurs also running pangolins.
Biped predators of the average sizes (Theropoda), such as and were the first typical representatives of dinosaurs of that time. Soon there were larger and even more often the herbivorous dinosaurs passing to four feet, for example. And at last at the end of the Triassic arose first small biped herbivorous animal (ornitopoda), in particular.
Hunting habits reminds a modern leopard, comparable with him in size. As well as the leopard, he could hammer the production surpassing it in the sizes. Perhaps, these dinosaurs hunted packs to what, in particular, finds of bones of several animals in one place testify. Extraordinary big cavity of a skull also speaks well for that was capable to difficult group relationship and joint dwelling in society.
It is possible to be surprised only how at such small head and a primitive structure of jaws and teeth they managed to provide the huge body with sufficient livelihood. Apparently. Animals had to chew the most part of day.
150 million years ago ancient birds were disturbed a little by a problem who they are - predatory dinosaurs or birds and as they should behave. Strongly waving the wings, they could fly up and by short distance though in flight, perhaps, mostly only planned. Insects and small lizards were their production.
So far over 10000 remains of dinosaurs are found: separate bones and the whole skeletons, skulls and teeth, eggs and excrement, the hardened traces and other prints. All data on dinosaurs which scientists nowadays have, are got by research of these remains.
One more distinctive sign, very long neck was unique. She everything was twice less than length of all animal and resembled the crane arrow capable highly to rise and take far aside. And the bone structure at all its durability was unusually easy.