There are 3 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 108206 | M. Clapham | Chekarda, Sylva River (PIN collection 1700) (coll. Sharov 1959-1961) Kungurian - Permian 2 - Russian Federation | Sharov (1968) |
| 116641 | M. Clapham | Chekarda, Sylva River (PIN collection 118) (coll. Permiakova 1935-1936) Kungurian - Permian 2 - Russian Federation | Martynov (1940) |
| 155819 | M. Clapham | Barda Locality, Krutaya Katushka (Zalessky collection) (coll. Zalessky) Kungurian - Permian 2 - Russian Federation | Zalessky (1939) |