Ryli ancestors of modern mole burrows even in Antarctica 245 million years ago. Paleontology excavated burrows, where even left their traces with claws paw. Perhaps in the hole these animals Permian-Triassic disaster destroyed much of life on Earth 250 million years ago. Modern Antarctica - and most icy continent on our planet. The entire faun, which can be found here, are off the coast, in all relying on marine waters, and much of the internal ice of Antarctica is covered with thick crust. In the middle latitudes of the Antarctic four seasons have merged into one continuous winter, depending on the season is a soft, very harsh. In the harsh winter sun almost all the time horizon is, in a soft, which can be described as summer, under the horizon almost no falls. However, once these lands meadows and, possibly, forests, rivers flow here, which inhabited the coast of four animals. Nora, who were dug in the river valleys, descending from the mountain tops relatively warm while Antarctica, of course, is a place of refuge Oded creatures, and not crabs or crayfish, just dug themselves underground reservoirs homes in the area. And Sidora, paleontology from the University of Washington, is proof of that. These are the traces of evidence legs left by ancient monastery Antarctic caves on the walls of their homes. Of course, millions of years of intense tectonic and sedimentary life on our planet these caves are not preserved in its original form - Sidor stumbled upon on their very original footprint. Caves were dug out brutish prehistoric reptiles on the bank of the river, where the glacier is now Vala. Apparently, 245 million years ago flood Hall know the river and filled with water place ancient saurus. Burney flows carried with them yet and a lot of sand and mud, which sealed entrances to the underground house. Remains of the inhabitants themselves in caves discovered was not - apparently they escaped death from floods, but the sand, packed in the tunnels, for many millions of years, fossils and become a solid cast cylindrical Check rock. That is where they have become largely the result of search operations, which are held at the Antarctic continent Sidor with their colleagues. The surface of the sand jams preserved fossils not only the general shape of groundwater standards, but even traces legs dig tunnels 245 million years ago, at the dawn of Triassic period. The biggest fossils sand cork has thirty-five centimetres in length, sixteen wide and nine deep; number of archaeologists have found several caves smaller. As deepening fossils sandy cylinder decreases in diameter, and seemed to end with some broadening of the donor, and was located where ancient relative of modern mammals. Nine such fingerprints caves have been found in the Allen Hills area in southern Victoria Land Antarctic. Then were found even some fossils remains of bones of these animals. Their dating showed that the four lived there as early as mid-Triassic period. A new age of discovery earlier at 15 million years, and it means that such animals have lived at the very beginning of the Triassic. Indeed, this fact - the main conclusion of scientists. About the same inhabitants of the caves now in paleontology had already formulated some opinion. The climate of the Earth blagovolil development and diffusion of the enormous heat of dinosaurs, while Antarctica, apparently, was a haven for nascent class warm. Currently, paleontology virtually unanimous in agreement that trinaksodony and other brutish saurus had rudiments pincher. Antarctica, though, and was connected with Africa, and probably had it in many common fauna, is still markedly different from her on Climate features even 250 million years ago. Digging standard, apparently helped trinaksodon withdraw offspring and to experience relatively cold winter: Antarctica, even in the composition of Pangei, at that time was already the polar continent. Maybe digging nor helped trinaksodons and other tsinodonts survive and mass extinction, when the Earth has lost 90% and 70% of marine fauna ground. The rest of the group terapsid, which include trinaksodony not have experienced disaster. But from tsinodonts eventually emerged mammals. click here
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