204 



45) intracranial openings of optic foramina of orbitosphenoid: 0 = separate; 1 = converging / 

 intermediate; 2 = confluent. 



46) interorbital septum anterior to optic foramina: 0 = absent; 1 = present. 



47) continuity of bilateral optic foramina in interorbital region: 0 = not continuous, no common 

 passage; 1 = continuous, form passage through interorbital region. 



48) alisphenoid canal: 0 = absent; 1 = present. 



49) location of least interorbital width: 0 = distinctly anterior to middle of interorbital region; 1 = 

 approximately in the middle of interorbital region; 2 = distinctly posterior to middle of interorbital 

 region. 



50) location of greatest zygomatic width: 0 = anterior to glenoid fossa (i.e., within zygomatic arch 

 proper); 1 = at level of glenoid fossa (i.e., at squamosal). 



51) relative position of zygomatic arches: 0 = lower than tooth row; 1 = level with tooth row; 2 = 

 higher than tooth row. 



52) direction of arch of anterior portion of jugal: 0 = downwards; 1 = flat, no distinct arch; 2 = upwards. 



53) degree of overlap of maxillary and squamosal processes of zygomatic arch, on medial surface of 

 zygomatic arch: 0 = little or none; 1 = approach closely - maxilla and squamosal almost or in contact. 



54) approach of jugal to lacrimal region: 0 = does not approach lacrimal region; 1 = reaches lacrimal 

 region / almost touches or does touch anterior wall of orbit. 



*55) dorsal process of squamosal process of zygomatic arch: 0 = absent; 1 = present. 



56) degree of interlock between jugal and dorsal process of squamosal process of zygomatic arch: 0 



= weak; 1 = medium; 2 = strong; 9 = dorsal process of squamosal absent. 



Palate and ventral side of snout (18 characters) 



*57) incisive foramina (= palatine fissure / foramen): 0 = absent; 1 = present. 



58) size of incisive foramina: 0 = small; 1 = medium; 2 = large; 9 = absent. 



59) posterior extension of incisive foramina: 0 = enclosed within premaxilla; 1 = contact premaxillary- 

 maxilla suture; 2 = extend into maxilla; 9 = incisive foramina absent. 



60) number of incisive foramina: 0 = one; 1 = two; 9 = absent. 



61) reduction of incisive foramina: 0 = absent; 1 = present. 



62) position of major palatine foramen relative to maxillo-palatine suture: 0 = anterior; 1 = on; 2 = 

 posterior. 



63) shape of maxillo-palatine suture: 0 = flat / square; 1 = rounded / triangular. 



64) outline of palatine bones in ventral view: 0 = square; 1 = "butterfly-shaped". 



65) shape of posterior edge of palatine: 0 = (roughly) triangular; 1 = arched; 2 = straight. 



66) presence of posteriorly directed process in midline of posterior edge of palatine: 0 = absent; 1 = 

 present. 



67) morphology of notching in posterior edge of palatine: 0 = rounded; 1 = triangular; 2 = incision; 

 9 = none. 



68) size of notching in posterior edge of palatine: 0 = small; 1 = medium; 2 = large; 9 = absent. 



69) relationship of bony nasal septum to posterior edge of palate: 0 = does not reach posterior edge 

 of palate; 1 = closely approaches / reaches posterior edge of palate. 



70) orientation of pterygoid hamuli: 0 = directed laterally; 1 = in midline; 2 = directed medially. 

 *71) relationship of ethmoid to pterygoid on ventral surface of skull: 0 = does not contact pterygoid; 

 1 = contacts pterygoid. 



