Crinoid Holdfast
This is a crinoid holdfast from the Prosser member of the Galena formation of Southeast Minnesota.
Photo Information
- Taken with Canon Canon EOS REBEL T3i
- Focal Length 24 mm
- Exposure Time 1/60
- f Aperture f/4.0
- ISO Speed 400
By Caleb
This is a crinoid holdfast from the Prosser member of the Galena formation of Southeast Minnesota.
By Tidgy's Dad,
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