Treptoceras crebriseptum (Hall 1847)
By Ludwigia
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9cm. From the Ordovician Katian stage of the Georgian Bay Formation.Found in Etobicoke Creek near Toronto.
Photo Information
- Taken with Canon Canon PowerShot SX230 HS
- Focal Length 5 mm
- Exposure Time 1/30
- f Aperture f/3.1
- ISO Speed 250
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