Close-up of Serrations
66.8 - 66 mya,
Hell Creek Formation,
Garfield County, Montana,
3.75 inches on the edge and 3.28 inches straight
Photo Information
- Taken with Panasonic DMC-GX7
- Focal Length 20 mm
- Exposure Time 10/3200
- f Aperture f/2.8
- ISO Speed 800
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