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Showing posts with label million. Show all posts
Showing posts with label million. Show all posts

Kiwi Came from Australia

Three years ago a fossil was found at st Bathams in New Zealand. The record books now have to be rewritten. It seems the fossil is an ancestor of the Kiwi and it indicates that it was related to the Australian emu. This undermines the premise that the kiwi is a solely New Zealand bird. After all it is the national symbol.

You see, the emu relative could fly and it flew to New Zealand. It was a tiny bird compared to the kiwi. The enormous egg that kiwis lay evolved. It was not "handed-down" by the giant Moa. Eggs began to get larger in birds during the Miocene.

The theory that the kiwi originated in Australia was commonly held before this fossil find. It was believed to have got to New Zealand when the country was joined to Australia on Gondwanaland, but his view has been put to rest.

Most New Zealand birds got bigger over time. This was not unusual. The kiwi evolved from the earlier tiny ancestor. Discovery of this 20 million year old fossil was pure luck. It is the oldest fossil ever found in New Zealand.
Conservation by Ty Buchanan
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Dinosaurs Found in Australia - What is Fact?

Australia is a very old continent. It seems the ancestors of Tyrannosaurus rex lived here. A hip bone has been found that dates to 110 million years ago which is 40 million years before T.rex roamed elsewhere on earth. Until now it was believed that T.rex only lived on northern continents.

Many of the things stated as fact by scientists are indeed just matters of faith until they are "proven" otherwise. Scientists argue about when dinosaurs developed feathers and why. They claim that birds today are direct descendants from dinosaurs. This is like saying humans are descended from dinosaurs. Much evidence points to birds having a line of descent completely separate from dinosaurs.

The same rings true with the Hobbit people of Flores Island. Some scientists will not accept that people different from humans survived until 18,000 years ago alongside humans. Neanderthals lived until 50,000 years ago, so why not another type of human? Science is much like religion. What is just theory is put forth as fact. Ah, the dangers of religion - and science!
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Conservation
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Humans Did Not Kill Off Megafauna

During the Middle-Late Pleistocene, one million to 10,000 years ago, more than 50 species of animal disappeared, the last to do so 46.4 thousand years from the present. The reason for the demise of the giant creatures is hotly debated. Some scientists claim that the spread of Man across the globe was the cause. This is suspect, however, because there were so few of them. Killing the odd animal would not have made a significant impact.

Many believe that the end date for megafauna is incorrect. As stated above, the theory that humans killed them off by definition means that people and animals lived side-by-side for a considerable time. Evidence in Australia certainly points to this - 13 species of large animals were here on human arrival. Moreover, the people mainly relied on subsistence strategies for food. Their weapons were not very efficient. A boomerang is highly inaccurate and the range of a spear is limited.

Megafauna died out over a long period of time, not all at a specific date. Species lingered on in many regions. Just assuming that humans killed them is a mistake and diverts from the discovery of why the large animals became extinct. This was a time of extremes in climate. Perhaps a series of wild swings in climate gradually reduced their number to the tipping point where reproduction did not take place.
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Fossil Find Shines Light on an Ancient Whale

A fossil find in Victoria, Australia, throws light on the origin of baleen whales. The artifact is 25 million years old. It is the 45 cm long skull of Mammalodon colliveri. Information about it has remained open since its discovery in 1932.

Though it had teeth it spent its time sucking mud in the search for prey on the seafloor. A short, blunt snout made this possible. This type of feeding led to the filter method of modern whales. The baleen whale was only three meters long, a far cry from the monsters that followed. Its ancestors though were also very large.

Other fossils have been found in Torquay, Victoria, notably Janjucetus hunderi which was unique to the area. This region is believed to be the cradle of tiny whales. Some form of isolation must have occurred for this to happen.
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Paleontology
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