There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 122565 | M. Clapham | Tykhta River, ditch 34, Kutsnetsk Basin (PIN collection 506) (= Sokolova II) Wuchiapingian - Permian 4 - Russian Federation | Martynova (1958) |
| 122568 | M. Clapham | Kaltan, outcrop 1300, bed 7 (PIN collection 600) Roadian - Permian 3 - Russian Federation | Martynova (1958) |