I have a rock or something that looks like no others in the place I found it Vancouver Washington.I dug up my yard to plant new lawn and found a bunch of different bones and teeth, I think from comparison to other dinosaurs bones and teeth that most are from turtles, I found a lot of turtle shells and Spurs,I need to get help on identification, I have small and large and I know you usely don't find a lot of the same shape rocks , but that's what I have been finding, how do I get help with my finds?