More than a century ago, an American paleontologist Marsh Otniel first explored the new giant dinos

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More than a century ago, an American paleontologist Marsh Otniel first explored the new giant dinosaur skeleton, surprised stated: "It is the small size of the skull and the brain suggests that this reptile was stupid and slow animals." Voiced his opinion rooted for decades and continues to live even today, even the word "dinosaur" has become the london look synonymous with archaic and dullness. But in fact, such an assessment is not fair, because most dinosaurs were extremely agile and sociable beings as such, small meat eaters or platypus dinosaurs.
It is known that the brain, in vertebrates - is the main center of perception, processing the london look and transmission of environmental information, thereby animal shapes the london look its behavior. For example, you pulls back his hand, touching a hot kettle, this seemingly simple movement that seems extremely the london look simple and natural, coordinated by the brain and reduced to elemental reflex. But for the split second that passed between how you feel hot tea and vidsmyknuly hand, the brain had to obtain and analyze information, forming a reaction of the body, and you escaped custody. As for us, and for the dinosaur brain plays a very important function. However, if you explore and brain and behavior of modern animals possible, Brain Research extinct - a super heavy task because the brain does not form fossils the london look and generally decomposes the london look very rapidly. About the brain and its functioning the london look in these animals paleontologist learn exclusively from indirect data, such as cranial radiographs boxes dinosaur skull shape and so on. D. It used to be that dinosaurs are reptiles, so they enrolled all anatomical and physiological parameters of modern reptiles as their own. But then looks at the place of dinosaurs in the system of the animal world has changed - it turned out that these "dinosaurs" are so close to the birds that differentiate them sometimes is not possible, at the same time they are equally distant from reptiles, although the latter remain very much in common. That's a paradox.
In modern reptiles hemisphere forebrain cortex have with poorly developed brain gray matter, and most of it consists of striped the london look bodies. Due to the significant development of the hemispheres diencephalon top, almost the london look invisible. Well-developed parietal organ and epiphysis. Parietal organ in structure resembles an eye. It distinguished transparent anterior to some extent similar to the lens and bokalopodibnu back of the inner wall of which has numerous light-sensitive cells. Parietal organ is highly developed in ґateriy and lizards. It is placed in the hole mizhtim'yanoyi bones and effectively perceive light. That is. the ancient reptiles were not two (as we used to), and three eyes ... well developed and the medulla oblongata, forming in the vertical plane curve, which is typical the london look for all higher vertebrates.
The central nervous system of birds is more complex than reptiles. Morphologically, it is caused by a relatively large size of the brain. Enlargement of the brain due to the development of the forebrain hemispheres. However, the london look as in reptiles, most of the forebrain formed striped bodies. On the contrary, the bark of hemispheres, unlike mammals, is poorly developed and represented the primary cortex. Olfactory share small. Diencephalon also developed. The cerebellum is very large and consists the london look of secondary particles - worm with transverse grooves.
From these considerations, we can say that in their anatomy, brain dinosaurs was somewhere between the london look the brain and the brain of reptiles birds. Finally in different groups of animals had developed differently, which is quite natural and normal. Thus the brain of dinosaurs was a formation with striped bodies and primary forebrain cortex, parietal without authority. But back to the facts. In carnivorous dinosaur the london look zaurornitoyida correlation between brain size and body were almost the same as in mammals. Photos of brain cavities of his skull show that the front of the front of the brain responsible for the sense of smell, the london look and back - for vision, were very well developed. Large and complex and the cerebellum was also responsible for the sophisticated movements (balancing, grasping, touching, etc.), these parts of the brain reach large sizes. Judging by the shape of the brain cavity of the skull, the london look good hearing and eyesight distinguished platypus dinosaurs. That they were most needed sense of herbivorous animals (which had no armor), in time to see the enemy. The owners of the smallest of the brain compared to body size (which is not surprising) were armor piercing and dinosaurs. Stegosaurus size of an elephant, had a brain the size of a walnut - it turns out that it was enough. In addition to the brain cavity in the skull, it would also