Fig. 56. Cylindracanthus Leidy, 1856, rostra. A–C. Cylindracanthus ornatus Leidy, 1856 in Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths

Fig. 56. Cylindracanthus Leidy, 1856, rostra. A–C. Cylindracanthus ornatus Leidy, 1856, SC2012.47.153, basal Lisbon Formation. A. Ventral view. B. Cross–section. C. Close–up of denticle rows. — D–G. Cylindracanthus rectus (Agassiz, 1843). D–E. MSC 38378, "upper" Lisbon Formation. D. Cross–section. E. Lateral view. F–G. WSU 5019, basal Lisbon Formation. F. Cross–section. G. Lateral view. Scale bars: A–C = 2 mm; D–G = 5 mm.