Isotelus gigas (Dekay 1824)
9cm. long. It's missing the Cephalon, but at least it has the imprint of the Hypostom. From the JD Quarry at Gamebridge, On., Canada. Verulam Formation, Katian, Upper Ordovician.
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Photo Information
- Taken with Panasonic DMC-FS3
- Focal Length 5.5 mm
- Exposure Time 10/6400
- f Aperture f/2.8
- ISO Speed 100
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