Coprolite? Impactite? Something Else?

[romeo-1]

Found this in a creek near Bridgetown, Nova Scotia. Was interesting enough to pick up and bring home but jo clue what it is. Closest I could find online were coprolite or impactite. Thoughts?

 

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[Kray Gelder]

A good cleaning with a tooth brush under water would give us better view of the rock itself. Its a foliated metamorphic rock, so gneiss is my first guess, schist my second.

 

[romeo-1]

How's this?