Cyrtodont Bivalve from Mount Marion Formation
Ptychodesma knappianum
Cyrtodont Bivalve
Middle Devonian
Mount Marion Formation
Marcellus Shale Subgroup
Hamilton Group
Glasco Turnpike
Mount Marion, New York
This is the only Ptychodesma I've found so far outside of the one site near Morrisville, N.Y.
Photo Information
- Taken with Apple iPad mini
- Focal Length 3 mm
- Exposure Time 1/446
- f Aperture f/1.8
- ISO Speed 25
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