Wow you had a very successful day! Thanks so much. The callanasid claws and Dendraster will be a great addition to the study kit. If you want to remove the matrix that would be great, although I can do it unless it is really hard (I may not have the right tools with me).
Yes you can just leave them for me at the SC county office, 400 Encinal. It should be labelled
C/o Mary Anne James