Compare of two Batostoma species from the same Decorah formation. They both overlaps in shape, size, and are among the largest branching bryozoan in Decorah Formation. The left three are Batostoma fertile and the right 3 are Batostoma minnesotense.
Photo Information
- Taken with EASTMAN KODAK COMPANY KODAK DX7590 ZOOM DIGITAL CAMERA
- Focal Length 6.3 mm
- Exposure Time 1/8
- f Aperture f/2.8
- ISO Speed 140
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