Spinatrypa rockfordensis (Fenton & Fenton 1924)
ø22mm. Cerro Gordo Member, Lime Creek Formation, Frasnian, Late Devonian. Location: Rockford, Iowa, USA. Thanks to my Secret Santa Crusty Crab.
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Photo Information
- Taken with Canon Canon PowerShot SX230 HS
- Focal Length 5 mm
- Exposure Time 1/100
- f Aperture f/3.1
- ISO Speed 320
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