There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 341 | J. Sepkoski | Cryptolithoides fauna, Road River Fm., Dist. of MacKenzie Caradoc - Ordovician 4-5 - Canada | Ludvigsen (1981) |
| 25297 | S. Holland | Mackenzie Mtns, Caribou & Flat Rivers, Sunblood Fm. Orthidiella-"Goniotelina" Arenigian/Llanvirn - Ordovician 2-2-3 - Canada | Ludvigsen (1975) |
| 25341 | S. Holland | Mackenzie Mountains, Redstone Arch, Road River Fm. Cryptolithus-Anataphrus Fauna Shermanian/Maysvillian - Ordovician 4-5-5 - Canada | Ludvigsen (1975) |
| 25344 | S. Holland | Mackenzie Mtns, Clearwater Creek, Road River Fm. O. quadrimucronatus Zone Shermanian/Maysvillian - Ordovician 4-5-5 - Canada | Ludvigsen (1975) |