(0) absent; (1) present. nerve: 172. (0) splint like; (1) solid, long and subconical; (2) Hamular process of the pterygoid: hollow and excavated by pterygoid sinus, lateral side highly concave, may or may not have lateral and inferior laminae; (3) form thin horizontal plates; (4) absent. 173. (0) rounded over in ventral view; (1) bear Hamular processes of pterygoids: anteroposterior keels. 174. Posterior-most point of hamular process of pterygoid, or medial part of pterygoid if (0) in transverse line with the middle of orbit; (1) in the hamular process is absent: line with postorbital process; (2) in line with anterior edge of zygomatic process of squamosal; (3) in line with middle of zygomatic process; (4) in line with the postglenoid process. 175. Fossa for pterygoid sinus on alisphenoid posterior to groove for mandibular branch (0) absent, bone is flat or not ossified because of enlarged of trigeminal nerve: internal foramen ovale; (1) shallow fossa; (2) deep subcircular fossa. 176. (0) plate-like with a wide, anteroposteriorly, base; Falciform process of squamosal: (1) rod-like with narrow base; (2) poorly-developed or absent. 177. (0) medial surface sutured to lateral lamina of Falciform process of the squamosal: pterygoid; (1) not sutured. 178. (0) absent; (1) absent but a small rectangular fossa for Tympanosquamosal recess: sigmoid process of the tympanic present, its long axis is transverse, and it is located medial to postglenoid process of squamosal; (2) present and enlarged, forms a triangular fossa medial and anteromedial to postglenoid process; (3) very large, forms large fossa that borders entire medial edge of glenoid fossa.
nerve: (0) absent; (1) present. 172. Hamular process of the pterygoid: (0) splint like; (1) solid, long and subconical; (2) hollow and excavated by pterygoid sinus, lateral side highly concave, may or may not have lateral and inferior laminae; (3) form thin horizontal plates; (4) absent. 173. Hamular processes of pterygoids: (0) rounded over in ventral view; (1) bear anteroposterior keels. 174. Posterior-most point of hamular process of pterygoid, or medial part of pterygoid if the hamular process is absent: (0) in transverse line with the middle of orbit; (1) in line with postorbital process; (2) in line with anterior edge of zygomatic process of squamosal; (3) in line with middle of zygomatic process; (4) in line with the postglenoid process. 175. Fossa for pterygoid sinus on alisphenoid posterior to groove for mandibular branch of trigeminal nerve: (0) absent, bone is flat or not ossified because of enlarged internal foramen ovale; (1) shallow fossa; (2) deep subcircular fossa. 176. Falciform process of squamosal: (0) plate-like with a wide, anteroposteriorly, base; (1) rod-like with narrow base; (2) poorly-developed or absent. 177. Falciform process of the squamosal: (0) medial surface sutured to lateral lamina of pterygoid; (1) not sutured. 178. Tympanosquamosal recess: (0) absent; (1) absent but a small rectangular fossa for sigmoid process of the tympanic present, its long axis is transverse, and it is located medial to postglenoid process of squamosal; (2) present and enlarged, forms a triangular fossa medial and anteromedial to postglenoid process; (3) very large, forms large fossa that borders entire medial edge of glenoid fossa.
SuppFiles1_Isthminia_matrix.docx