| | [No title] |
 | | In the few living iguanians where a dorsal overlap surface is evident on the premaxillary process—only Polychrus and the hoplocercine Enyalioides oshaughnessyi (where it is highly developed)—, the premaxilla has a posterolateral recess formed by the development above the primitive articulation surface of a flange that overlaps the maxilla. |
| | A dorsal excavation is also seen in Enyalioides oshaughnessyi and many iguanines; but in iguanines the lateral crest bounding this dorsal excavation curves medially across the dorsal surface of the process. |
| | In the case where a sharp bend is absent, the nasal process of the maxilla is essentially a vertical flange that may curve slightly medially at its dorsal terminus. |
| palaeo-electronica.org /2006_2/dakota/systematic.htm (6893 words) |
