You guys were a ton of help with the plant fossils, now it's time for round 2
A little background for those that didn't see my last post, I have been asked to help ID and sort the fossils in a local history museum's basement. I do not have the time or resources to commit to do the job completely by myself, so I am asking for any help I can get.
These are mostly bivalves and one ammonite. As with before, I do not know the formations, but they are more likely to be from the New Mexico/Texas area than from elsewhere, although they could be from anywhere.
And as I took these pictures last week, we still have a Sharpie as a size reference.
Thanks for the help!