Hallopora sp. (Bassler 1911) ?
2.5cm. From the south pit at Hungry Hollow, On., Canada. Middle Devon, Givet, Hungry Hollow Member.
Photo Information
- Taken with Panasonic DMC-FS3
- Focal Length 5.5 mm
- Exposure Time 10/250
- f Aperture f/2.8
- ISO Speed 400
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