Arthroacantha carpenteri (Hinde 1885)
2cm. Calyx with associated Platyceras gastropod. Fom the Arkona Shale, Givetian, Middle Devon at Hungry Hollow, On.
Photo Information
- Taken with Canon Canon PowerShot SX230 HS
- Focal Length 5 mm
- Exposure Time 1/30
- f Aperture f/3.1
- ISO Speed 200
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