I found this shell on the rock ledge of Little Tribune Bay on Hornby Island on Sept 12,2019. I’m a total amateur fossil hunter but after some research, I wonder if it’s a glycymerdid. Of course since I know absolutely nothing about fossils except what I can find on the web that might match my find, i’m turning to the Forum for your expertise. I hope someone can tell me if this is even a fossil and if so, what it is. Thanks, Cricket.