cf. Ceraurus sp. (Green 1832)
By Ludwigia
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Part of the Cephalon. 4cm. wide. Found on the Rideau riverbank near Manotick, On. in shale dumped there to shore up the banks which probably originates from the Ordovician Billings Shale Formation.
Photo Information
- Taken with Canon Canon PowerShot SX230 HS
- Focal Length 5 mm
- Exposure Time 1/6
- f Aperture f/8.0
- ISO Speed 100
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