Stringer, G.; Hulbert, R.; Nolf, D.; Roth, P.; Portell, R. A Rare Occurrence of Matched Otoliths and Associated Skeletal Remains of Apogon Townsendi (Osteichthyes) from the Caloosahatchee Formation (lower Pleistocene) of Florida. FLMNH 2017, 55, 89-103.