| Edrioaster bigsbyi Edrioasteroid Verulam Formation Brechin, Ontario, Canada See Edriophus levis for explanation of the obvious difference between the two. Size: 3.3 cm diameter | 
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| Edrioaster bigsbyi Edrioasteroid Verulam Formation Brechin, Ontario, Canada See Edriophus levis for explanation of the obvious difference between the two. Size: 3.3 cm diameter |
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