Table 2.

Cranial landmarks measured on each specimen

#	Description
1	Rostral‐most tip of rostrum
2	Caudal margin of occipital condyle
3	Caudal‐most point of palate midline
4	Rostral‐most point of pterygoid at suture of pterygoid and palatine
5	Caudal‐most suture of palatine, pterygoid and alisphenoid
6	Suture of maxilla and palatine (left)
7	Suture of maxilla and palatine (right)
8	Caudal edge of last postcanine tooth (left)
9	Caudal edge of last postcanine tooth (right)
10	Junction between L8 and L9 at palate midline
11	Caudal edge of second postcanine tooth (left)
12	Caudal edge of second postcanine tooth (right)
13	Junction between L11 and L12 at palate midline
14	Rostral edge of canine along lingual palatine border (left)
15	Rostral edge of canine along lingual palatine border (right)
16	Junction between L14 and L15 at palate midline
17	Caudal‐most edge of first postcanine (left)
18	Palate midline medial to L17
19	Junction of nasal, frontal and maxillaa
20	Dorsal‐most junction of jugal and squamosal (right)
21	Rostral‐most point at parietal and squamosal suture
22	Dorsal‐ and caudal‐most suture of jugal and maxilla
23	Rostral suture of premaxilla and maxilla (left)
24	Rostral suture of premaxilla and maxilla (right)
25	Dorsal junction of jugal and maxilla (left)
26	Dorsal junction of jugal and maxilla (right)
27	Dorsal‐most junction of jugal and squamosal (left)
28	Lateral‐most point of mastoid process (left)
29	Lateral‐most point of mastoid process (right)
30	Maximum breadth on lateral margin of occipital condyle (left)
31	Maximum breadth on lateral margin of occipital condyle (right)
32	Lateral‐most tip of external auditory meatus
33	Medial‐most point of auditory bulla at suture of basioccipital and basisphenoid
34	Rostral‐most tip of auditory bulla
35	Caudal‐most tip of auditory bulla
36	Caudal‐most point of infraorbital foramena
37	Suture of premaxilla and maxilla rostral to caninea
38	Caudal‐most point of infraorbital foramena
39	Medial‐most point of infraorbital foramena
40	Lateral‐most point of infraorbital foramena
41	Rostral‐most suture of parietal and squamosal (left)a
42	Caudal‐most suture of parietal, squamosal and supraoccipital (left)a
43	Rostral‐most projection of parietal (left)a
44	Caudal‐most projection of parietal and supraoccipital (left)a
45	Rostral suture of parietal and frontal on dorsal midline (left)a
46	Caudal suture of parietal and supraoccipital on dorsal midline (left)a

^aAll measurements from the ventral side of the skull, except where marked with an asterisk.