There are 3 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 121543 | M. Clapham | Popovka River, volcanic tuffs, Kolyma Basin (Zavodowsky coll) (coll. Zavodowsky 1960) Asselian - Permian 1 - Russian Federation | Zavodowsky (1968) |
| 126178 | M. Clapham | Bol'shie Yursuki River, outcrop 1027, bed a, Pay-Khoy Range (coll. Ustritsky 1950-1954) Kungurian - Permian 2 - Russian Federation | Ustritsky (1960) |
| 126179 | M. Clapham | Saa-Yaga River, outcrop 135, bed b, Pay-Khoy Range (coll. Ustritsky 1950-1954) Kungurian - Permian 2 - Russian Federation | Ustritsky (1960) |