Showing posts with label dinosaur. Show all posts
Showing posts with label dinosaur. Show all posts

New Finds of Early Humans Do Not Change the Basic Theory

Darwin got it right. Well actually he may not have. Fossils of early humans do not alter basic scientific thought in relation to evolution, Finds do not show a linear development toward advanced Man. Evolution though does tend to predict what new discoveries show. Claims that a particular fossil find is a breakthrough are just not true.

New dinosaur fossils, however, tend to be groundbreaking with regular identification of new type of dinosaurs. Indeed, they seem to have roamed on every continent. The whole book on dinosaur evolution has not yet been written. Time will tell how clear an understanding of it we can get.  It seems evolution of dinosaurs is clearer than that of humans.

New research teams need to be formed to go to all parts of the world and seek answers to evolution of mammals and reptiles, if indeed dinosaurs were reptiles. Some specialists today even question this view.
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Australian Blog                         

Oldest Dinosaur Is Found

Dinosaurs did not start out being large. Probably the oldest dinosaur ever found going back 243 million years was only as big as the average dog. This is only supposition of course. Some scientists say this animal, the Asilisaurus, was only a relative of dinosaurs.

Research into the matter is difficult. Only fossil fragments have been found. The specimen in question called the Asilisaurus lived in Tanzania. Another similar animal was found in the Tanzanian Manda Beds in the 1930s. Named a Nyasasaurus, it had a crest of bone along 30 per cent of its upper arm where large chest muscles would have been attached. This is a major feature of dinosaurs.

Many kinds of dinosaur seem to have suddenly appeared 10 million years after the Tanzanian fossils. This indicates a common origin from one creature. This ancestor could have been the early dinosaur Nyasasaurus or its relative the Asilisaurus.
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Dinosaurs Did Not Hold Their Heads Aloft

It seems Dinosaurs had vouracious appetities and went around "hoovering up" all the greenery they could find with their heads close to the ground. Discussed in a television documentary by Phil Manning this is now accepted as fact. The Sauropod did not hold its head up like a giraffe. The head was held horizontally to the ground. There is no way blood could have been pumped up high. The heart would have been impractically huge for that to occur.

University of Adelaide's Roger Seymor has held the horizontal tack for a long time. A British documentary confirmed this. David Wilkinson in England says the neck of the Brachiosaurus, which was 30 feet long, was far too heavy to hold aloft.

The dinosaurs had long necks to conserve energy. The necks could be moved around in the search for food without moving the body. They were as long as was beneficial to save energy grazing. It was not really grazing like a cow, for example. Their neck were long tubes similar to a vacuum cleaner. They didn't do any chewing.
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Ostriches Use Wings to Run

The mystery of why dinosaurs evolved feathers has been solved. Observation of ostriches shows that wings are used to retain balance while running. Far from being evolutionary leftovers, they are used constantly.

This finding was made by breeding ostriches that were "human-friendly". Then they were then able to be tested, which took place when they were three years old. The ostriches were made to run down a 300 meter "track", indoors. They were seen to zigzag, brake and turn, guiding their bodies using wings as rudders.

Tests showed that feathers provided lift which improved stability. All living flightless birds are able to evade capture by quickly turning one way then the other. Without wings they would not be able to do this.

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