THE CYPRAEIDAE AND OVULIDAE (MOLLUSCA; CAENOGASTROPODA) FROM THE COOK MOUNTAIN FORMATION (BARTONIAN, MIDDLE EOCENE) OF THE GULF COASTAL PLAIN, SOUTHERN UNITED STATES: A PROVINCE OF UNSUSPECTED GENERIC ORIGINS. Southeastern Geology, 53(1), May 2018: 41-61. 57 [Zoological Record Volume 155]