The Medina Group is a geologic group in New York. It preserves fossils dating back to the Silurian period. The group includes the , Power Glen Shale, , Grimsby Formation, , and .
The Medina Group is a geologic group in New York. It preserves fossils dating back to the Silurian period. The group includes the , Power Glen Shale, , Grimsby Formation, , and . (en)
The Medina Group is a geologic group in New York. It preserves fossils dating back to the Silurian period. The group includes the , Power Glen Shale, , Grimsby Formation, , and . (en)