Exostinus lancensis Gilmore, 1928

Figure 8L

A right maxilla fragment, AMNH 8497, from Clambank Hollow, is referred to Exostinus lancensis (fig. 8L). As the specimen is broken, little can be said of the shape of the maxilla. The teeth are indistinguishable from those of E. lancensis, and are pleurodont with unexpanded bases and slightly recurved crowns. The crowns consist of a principal central cusp with an anterior crest but no distinct anterior cusp. The posterior cusp is not developed. Faint vertical striations are present on the lingual side. The slender teeth project to one-third and one-half of their length above the jaw.