Oyster Shells from the Severn Formation, MD.
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By Jeffrey P
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Agerostrea nasuta Oysters Specimen on right- 1 and 5/16 inches Upper Cretaceous Severn Formation Monmouth Group Prince George's CO., MD. A gift from HistorianMichael
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Photo Information
- Taken with Apple iPad mini
- Focal Length 3 mm
- Exposure Time 1/60
- f Aperture f/1.8
- ISO Speed 100
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