Modiolopsis ovata Whitella sp. found at Mimico creek. Internal mold of a clam valve. I picked this up from the bottom of a collapsed cliff. Georgian Bay formation, late Ordovician, Toronto, Mimico creek. I put a dime next to it for size.
A slab full of late Ordovician fauna of the Georgian Bay Formation of Toronto, mostly containing whole complete Modiolopsis. Found at a collapsed cliff of shale at Mimico creek. Many specimens have crushed parts and their bits of crushed parts got thrown all over the slab, so probably this was a storm turbulence-caused death.