2011 年 3 月 21 日，肖恩?芬克 (Shawn Funk) 在加拿大艾伯塔省北部麦克默里堡附近的森科尔千禧矿场挖矿时发现了这具化石。
It was found by Shawn Funk, when he was digging at the Suncor Millenium Mine near Fort McMurray in northern Alberta, Canada, on March 21, 2011.