A few years ago I bought some Crinoids from a dealer on e-bay. I've since lost the labels but remember that they all came from Canada and were from the Verulam or Bobcaygeon formations. I sent pictures of the specimens to my friend Joe since he is very familiar with the fauna of those two formations. Here is what he suggests:
Daedalocrinus or possibly Cupulocrinus
Daedalocrinus (lying on some other crinoid's scattered plates... maybe Carabocrinus?)
I welcome any other ideas or suggestions.