| With the possible exception of this small missing portion of the jaw, there are no other teeth or denticles on the prearticular. |
| In this convolution, the edges of the blades in teeth 21-27 are serrated and show 15 denticles on each one. |
| Maxillary or posterior dentary teeth more recurved, denticles present on the anterior carinae. |
| Isolated chondrichthyan dermal denticles belonging to the form genus Petrodus are widespread and common in the Carboniferous. |
| Ventral epidermal cells secrete a segmentally repeating pattern of small hooks, called denticles, separated by expanses of naked cuticle. |
| There was some restoration of cuticular structures, including ventral denticles. |
