A soft substrate community with edrioasteroids, from the Verulam Formation (Middle Ordovician) at Gamebridge, Ontario

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Abstract
The edrioasteroids Isorophusella incondita (Raymond) and Cryptogoleus chapmani (Raymond) occur in profusion on one horizon in the lower member of the Verulam Formation (Middle Ordovician) near Gamebridge, Ontario. The associated fauna, including brachiopods, trilobites, and gastropods, suggests a smothered life assemblage from soft bottom shallow marine platform conditions. The edrioasteroids settled on overturned shells of Rafinesquina alternata and on local hard surfaces provided by previously formed internal moulds of molluscs.

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