Description
Original diagnosis after Guinot, Hautier, Sambou & Martin, 2023 [31795]: Dasyatoid species with moderate degree of monognathic heterodonty and strong sexual heterodonty. Teeth varying from broader than high to as high as broad, not exceeding a maximum size of 1.5 mm. Holaulacorhize root low and wider than the crown but constricted below the crown. Root lobes triangular projecting lingually with flat and strongly inclined basal face. Broad and deep nutritive groove wider in its central region with wide central foramen. Labial root face sub-vertical with one to three large foramina. Non-cuspidate anterior teeth of trapezoidal occlusal outline, broader labially than lingually; rectangular in laterals. Marginal angles are obtuse and blunt. Margino-labial angles very developed, acute and strongly projecting labially as well as laterally in anteriors. Marked median concavity of the labial crown edge between the margino-labial angles. Oblique and lingually protruding transverse region separating the lingual and labial faces with oval to rectangular depression. Labial edge of transverse depression weakly convex with irregular crest of varying sharpness. Lingual edge of transverse depression with granulose enamelled ornament that can form a sharp irregular crest. Crest on labial face that may or may not reach the marginal edges of the base of the margino-labial angles. Fine and irregular transverse ridge between the crest and the labial crown edge. Labial ornament coarse and irregular represented by tubercles, short ridges or cupulas. Lingual face is high and concave in profile view, divided into two depressed margino-lingual faces by a wide hourglass-shaped vertical ridge. Marginal edges of lingual crown face vertical and straight. Lower edge of lingual crown face concave in its centre. Cuspidate teeth cordiform in occlusal view with concave labial edge. Rounded, broad and both labially and laterally (in anteriors) projected margino-labial angles. Labial crown face oblique and bordered labially by a sharp ridge. Base of labial crown face depressed, upper profile convex. Very coarse labial ornament of broad tubercles occasionally arranged into vertical ridges. Main cusp short, narrow, triangular, and lingually curved. Lingual crown face high with weakly depressed margino-lingual faces and vertical medial convexity. Lingual face with concave marginal and lower edges.

Remarks
shark-references Species-ID=16488;

References