Text Published With Plate -- Lateral  views of 5 specimens representing a sequence of growth stages.  All from collection 60PB-14.  OSU 274444, 27445, 27446, 27447, 27448, 27449

References :  Bergstrom and Sweet: Conodonts from the Lexington Limestone (Middle Ordovician) of Kentucky and it's Lateral Equivalents in Ohio and Indiana, Bulletins of American Paleontology, V 50, 1966 pg. 267-442