Rabdocidaris sp. (Desor 1855)
By Ludwigia
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Spine. 2.5cm. From the upper Aalenian in Canton Aargau, Switzerland.
Photo Information
- Taken with Canon Canon PowerShot SX230 HS
- Focal Length 5 mm
- Exposure Time 6/10
- f Aperture f/8.0
- ISO Speed 100
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