Thaleops (americanus) laurentiana (Billings 1859) ?
By Ludwigia
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2cm. Pygidium. From the JD Quarry at Gamebridge, On., Canada. Verulam Formation, Katian, Upper Ordovician.
Photo Information
- Taken with Panasonic DMC-FS3
- Focal Length 5.5 mm
- Exposure Time 10/300
- f Aperture f/2.8
- ISO Speed 400
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