There are 6 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 13940 | M. Foote | Ust'irgisla Beds of Siyak River Section Pridoli - Silurian 2 - Russian Federation | Tyazheva and Zhavoronkova (1977) |
| 13941 | M. Foote | Lower Siyak Beds of Siyak River Section Lochkovian - Devonian 1 - Russian Federation | Tyazheva and Zhavoronkova (1977) |
| 13942 | M. Foote | Middle Siyak Beds of Siyak River Section Lochkovian - Devonian 1 - Russian Federation | Tyazheva and Zhavoronkova (1977) |
| 13943 | M. Foote | Upper Siyak Beds of Siyak River Section Pragian - Devonian 1 - Russian Federation | Tyazheva and Zhavoronkova (1977) |
| 13954 | M. Foote | Ust'irgisla Beds of unnamed (Bezymyannyi) Stream section Pridoli - Silurian 2 - Russian Federation | Tyazheva and Zhavoronkova (1977) |
| 13955 | M. Foote | Lower Siyak Beds of unnamed (Bezymyannyi) Stream section Lochkovian - Devonian 1 - Russian Federation | Tyazheva and Zhavoronkova (1977) |