Description
Original diagnose after Shimada (2008) p. 1189 [4646]: Small teeth (measuring up to approximately 4 mm in total tooth height in holotype); crown highly asymmetrical because of distally inclined, triangular cusp and gently convex distal heel; lingual face of cusp and distal heel more convex than their labial face; mesial cusp margin gently convex or slightly indented at middle; distal cusp margin straight or slightly concave except near its apex that tends to be slightly convex; distal heel apicobasally low and mesiodistally short, and poorly demarcated from distal edge of cusp in more erect, presumably anteriorly located teeth; small but well-defined serrations along cusp and distal heel margins; distally directed cusp apex not extending beyond distal demarcation of distal heel; tooth neck between crown and root on lingual face rather narrow; crown base on labial side weakly overhanging bilobed root; basal concavity of root between lobes gently arched ( shallow and broad); lingual root face gently separated into apical and basal faces without lingual protuberance at middle; many minute shallow pits (= porous) particularly on basal face of lingual root face as well as middle of labial root face.

Remarks
shark-references Species-ID=8131;
valid after Shimada (2008) p. 1189 [4646];

synonym of Nanocorax microserratodon after Guinot et al. (2013) p. 623 [24889];

References