such as "Introduction", "Conclusion"..etc
Hans Larsson, a McGill University palaeontologist (located in Montreal,
Canada), has found physical proof that Canada's Arctic regions once had
a Jurassic era. Scientists have suspected that dinosaurs lived in
Canada's great north eons ago, yet it remained an unproven theory,
since no bones had ever been uncovered.
Not anymore. Larsson has discovered tyrannosaurus dinosaur bones, which
until now, had only been located in Canada's Prairie Provinces, as well
as in the Western United States. "We were able to clarify that
dinosaurs – large predatory dinosaurs – and a great variety of plants
lived in the High Artic," he says.
"We found dinosaur remains, as well as fern and tree fossils,"
continues Larsson, who walked up to 25 kilometres per day for one month
with his research team to locate bones during the summer of 2003 and
2004. "You wouldn't expect it, yet dinosaurs and a great variety of
plants lived in the High Arctic 240 to 65 million years ago."
These were Larsson's first Arctic expeditions. He has also visited
Western Africa five times to seek out elusive dinosaur fossils. He says
the work isn't easy. Artic digs meant hours of walking with heavy
equipment, while African digs came with pounding sun and drinking bad
water. Yet it's all worth it. "The fact that I may bring new
perspectives on ancient life is what keeps me going," he says.
Larsson, who teaches biology and is curator of vertebrate
palaeontology at McGill's Redpath Museum, is most interested in
discovering unknown species. Of particular interest are archosaurian
reptiles, (crocodiles), birds and dinosaurs. He focuses on two parallel
research tracks: fossil collection and developmental biology.
His main pursuit is to track the evolution of one species and their
development. In Niger alone, his explorations with University of
Chicago palaeontologist Paul Sereno led to the discovery of eight
unknown dinosaur species and five new crocodile species. Read more on
Larsson at http://www.mcgill.ca/reporter/35/10/newprofs/larsson/.
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