Owen Yonkin Silurian Collection
Rochester Shale
Lower Silurian
Western New York
Silurian of Sweden
Waldron Shale
Middle Silurian
Waldron, Indiana
Pittsford Shale
Upper Silurian
Western New York
Fiddlers Green Formation
Upper Silurian
Central/Western New York
Tonoloway Formation
Upper Silurian
Pennsylvania
