Wanted fossil or recent bryozoa, coral or hydrozoan covered gastropod shells that were used by hermit crabs. I am especially interested in the Texas Longhorn -Hippoporidra edax examples but would like examples from different ages and locations. Use is for a talk/donation on Predation, Protection and Cooperation for the Natural History Society of Maryand (volunteer). Would trade examples I collected @ Myrtle Beach, SC or other fossils from the Miocene of MD, shark teeth from SC, shells from the Pliocene of Florida etc. Would buy as well.