There are 3 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 171717 | B. Kröger | Cornwall, Valcour Formation Chazyan - Ordovician 2-4 - Canada | Raymond (1916) |
| 172201 | B. Kröger | Hogs Back, Ottawa Valley, Aylmer Sandstone Fm. Chazyan - Ordovician 2-4 - Canada | Raymond (1911) |
| 172358 | B. Kröger | Rockland, Ottawa Valley, Aylmer Fm. Chazyan - Ordovician 2-4 - Canada | Raymond (1906) |