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1992
Geologist and cartographer Joseph Tyrrell discovers a plethora of dinosaur bones in Alberta.
5.8• 1960
6.9• 1959
6.0• 2013
6.9• 1983
6.0• 2012
6.1• 1993
6.4• 2017
6.7• 1990
6.6• 2016
7.2• 1988
6.2• 2006
6.5• 2022