West Virginia Brachiopods

These pictures of brachiopod fossils are from the West Virginia-Virginia border off I-64 exit 183? (Monroe County, WV). They were sent to me by a reader named David who was wondering about their identification. He writes they are similar to fossils he find in the Ordovician formations of Craig County, Virginia. If any one knows of what they might be, please post a comment.

The 2nd and 3rd images remind me of muscle scars on the inside of a brachiopod shell.  The fourth imprint looks like a Hebertella.