Ordovician brachiopods from Pennsylvania
Sowerbyella sp. (brachiopods- about a half inch wide)
Middle Ordovician
Coburn Limestone
Trenton Group
Antes Fort, Pennsylvania
Photo Information
- Taken with Canon Canon PowerShot A470
- Focal Length 6.3 mm
- Exposure Time 1/4
- f Aperture f/3.0
- ISO Speed 200
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