This web site offers a cyberspace glimpse into the world of Dr. Robert Reisz's vertebrate palaeontology research group at the University of Toronto's Mississauga Campus. Robert and his associates study the fauna of the Late Palaeozoic, a fascinating interval of Earth's history that saw the first flowering of groups that were ultimately ancestral to modern mammals, reptiles and amphibians. This period of evolutionary experimentation appears to have been suddenly terminated at the end of the Palaeozoic, probably by a cataclysmic mass extinction that made way for the earliest dinosaurs and many other new forms.
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