Heritage Minutes: Joseph TyrrellHeritage Minutes: Joseph Tyrrellthumb_upthumb_downHeritage Minutes: Joseph TyrrellJune 28, 1992Geologist and cartographer Joseph Tyrrell discovers a plethora of dinosaur bones in Alberta.CA Last Updated: 14 days ago Request Update CastThomas ButlerJoseph TyrrellHarley CrowchildAdditional CastJohn EvansAdditional CastDon FrancksAdditional CastLoon-HawkAdditional Cast