Holotypic teeth of H. allocotus (HBV-20001) from the Upper Cretaceous of Shanxi, China. Larger tooth in (A) occlusal, (B) basal (silhouette schematic); (C) mesial or distal, (D) labial, (E) mesial or distal, and (F) lingual views. Smaller tooth in (G) occlusal, (H) basal schematic, (I), mesial or distal, (J) labial, (K) mesial or distal and (L) lingual views. Abbreviations: b, bump; ri, ridge; wf, wear facet.