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100_9087
 


Vinlandostrophia extensa Decorah formation. Rare. I includes a specimen of Pionodema subaequata and Rhynchotrema ainslei for compare - the costae is much larger and more coarse. For a Vinlandostrophia it doesn't have wings.

From the album:

Brachiopods of Platteville/Decorah Twin Cities Minnesota

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Photo Information for 100_9087

Taken with EASTMAN KODAK COMPANY KODAK DX7590 ZOOM DIGITAL CAMERA

  • 11.5 mm
  • 1/40
  • f f/3.2
  • ISO 100
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