By Tetradium
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Sceptaspis lincolnensis cephalon with damage to one eye and part of head. 1.7 cm across. Platteville Formation Twin Cities. Rare at least to me.
Photo Information
- Taken with EASTMAN KODAK COMPANY KODAK DX7590 ZOOM DIGITAL CAMERA
- Focal Length 11.1 mm
- Exposure Time 1/30
- f Aperture f/3.2
- ISO Speed 140
