Silurian D
US$31.40
- Lower Silurian Age Fossil
- Species: Dalmanites Limulurus
- Slab weight: 0.120 pounds (54 grams)
- Slab width: 3.0 inches (7.62 centimeters)
- Collecting Site: Rock Outcrop on Barge (Erie) Canal
- Locality: Rochester, New York
- Formation: Rochester Shale Formation
- Age: Silurian Period 425 - 432 Million years old