| Astrocystites ottawaensis Edrioblastoid Bobcaygeon Formation Brechin, Ontario, Canada Probably one of the rarest fossil to be found at Brechin or anywhere else. Size: 3 cm | 
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| Astrocystites ottawaensis Edrioblastoid Bobcaygeon Formation Brechin, Ontario, Canada Probably one of the rarest fossil to be found at Brechin or anywhere else. Size: 3 cm |
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