By Tetradium
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Ceraurid hypostome. Platteville Formation (SW corner specimen) and rest are Decorah Formation. For a long time I thought it was little rolled up trilobites, that's how much the hypostome look like. Tiny .5 cm for Decorah ones and .6 cm for platteville ones. Decorah ones seem to be uncommon to common and very easily overlooked because of its tiny size. Heck I wonder how many had I overlooked over 5 years.
Photo Information
- Taken with EASTMAN KODAK COMPANY KODAK DX7590 ZOOM DIGITAL CAMERA
- Focal Length 11.1 mm
- Exposure Time 1/40
- f Aperture f/3.2
- ISO Speed 100
