Fig. 7

Specimen referred to Deltodopsis? bialveatus, AMNH FF6450. Here designated as Arcuodus bialveatus, comb. nov. a Occlusal view. Lingual end to left. Scale bar = 5 mm. b Lateral view. Lingual end to left. Scale bar = 5 mm. c Basal view. Scale bar = 5 mm. Drawings published as Branson, 1906 ([32], pl. 41, figs. 8-9)