Description
Emended diagnosis after Pollerspöck & Shimada, 2024 [33493]: Lamniform differing from all known species of otodontids by the following combination of characters: tooth consisting of a sharply-pointed, relatively tall, triangular main cusp, in anterior or anterio-lateral teeth one prominent pair of triangular lateral cusplets, in posterior teeth sometimes a second pair of small, secondary cusplets and strongly bilobed root; main cusp erect, in anterior teeth slightly inclined distally, or gently curved distally, in posterior teeth clearly inclined distally; lingual crown face very convex without ornamentation; labial crown face flat or subtly convex except center of base with weak depression; height and width of each lateral cusplet nearly equal with tendency to point outward; both mesial and distal cutting edges of main cusp and lateral cusplets smooth and razor-like, and continuous from apex to base; main cusp and lateral cusplets nearly erect to gently curved lingually; concave crown base and distinct, chevron-shaped tooth neck on lingual face characterized as a bourlette covered with thin enameloid layer; prominent tooth neck also on labial face in tall teeth, forming rounded ledge with thin enameloid layer that grades into enameloid of main cusp and lateral cusplets; bilobed root with rounded basal tips and moderately tight basal concavity in between; root overall robust but particularly at lingual protuberance that generally exhibits one or two prominent and a few smaller nutritive foramina; root width slightly wider than total crown width; osteodentine tooth histology

Remarks
shark-references Species-ID=16509;

References