By Tetradium
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Rhynchotrema ainslei Decorah shale, Twin Cities Minnesota. This species appear to be much less common than Rhynchotrema wisconsinense. How to tell the two species apart? Rhynchotrema have much more costae than R. wisconsinense. Size and shape are variable, but compare to R. wisconsinense R. ainslei is more fragile and more easily deformed by the fossilization procession.
From the album:
Brachiopods of Platteville/Decorah Twin Cities Minnesota
· 48 images- 48 images
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Photo Information
- Taken with EASTMAN KODAK COMPANY KODAK DX7590 ZOOM DIGITAL CAMERA
- Focal Length 8.5 mm
- Exposure Time 1/30
- f Aperture f/3.0
- ISO Speed 140
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