There are 4 matches

Collection Authorizer Collection name Reference
24636S. Holland District of Mackenzie Ceraurus mackenziensis zone Edenian - Ordovician 5 - Canada Ludvigsen (1979)
25178S. Holland Whittaker Formation, Trench Lake, District of Mackenzie Caradoc - Ordovician 4-5 - Canada Ludvigsen and Chatterton (1991)
25179S. Holland Whittaker Formation, Mount Berg, Thundercloud Range, Mackenzie District Caradoc - Ordovician 4-5 - Canada Ludvigsen and Chatterton (1991)
192139P. Wagner Section W-1. 023.5 - 024.5 m. South Thundercloud Range, District of Mackenzie Edenian - Ordovician 5 - Canada Mitchell and Sweet (1989)

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