Ornithosuchids can be identified by the presence of an arched diastema, a gap between the teeth at the front of the snout. When the jaw is closed, two large, curved, dentary (lower jaw) teeth fit into the diastema, which is positioned between the premaxilla and maxilla. Two shallow depressions are on the wall of the diastema to accommodate these teeth.
Ornithosuchids can be identified by a specific opening in their snout, marked by two large, curved teeth that fit into this space when the jaw is closed. This opening is located between the premaxilla and maxilla, with shallow indentations on its walls to accommodate these teeth.