THE SKULL. 33 



Measurements of Skull. [Tinoceras iiigens. No. 1041.) 



m. 



Total length of skull from nasals to occipital crest, . 0.87 



Total length, from premaxillaries to occipital condyles, . 0.815 



Greatest transverse diameter, through i>arietai protuberances, 0.47 



Greatest transverse diameter, through parietal angles of crest,. . 0.33 



Greatest transverse diameter, through maxillary protuberances, 0.35 



Least transverse diameter, behind maxillary protuberances, 0.21 



Greatest transverse diameter, through zygomatic arches, 0.37 



Greatest transverse diameter, through post-gleuoid processes, 0.30 



Length of palate, from end of premaxillaries to posterior nares, 0.40 



Width of palate, between last molars, 0.064 



Width of palate, between first molars, 0.065 



Width of palate, between first premolars, 0.056 



Width of palate, across diastema, 0.09 



Width of palate, between canines, 0.10 



Antero-posterior diameter of zygomatic fossa, 0.19 



Transverse diameter of zygomatic fossa, ._. 0.08 



Distance from top of parietal protuberance to end of post-gleuoid process, 0.52 



Vertical diameter of foramen magnum, 0.075 



Transverse diameter of foramen magnum, 0.045 



Measurements of Skull. (Tinoceras pufjna.i-. No. 1044.) 



m. 



Total length of skull f r< im nasals to occipital crest, 0.77 



Total length, from premaxillaries to occipital condyles, ... 0.665 



(jrreatest transverse diameter, through parietal protuberances, .. 0.425 



Greatest transverse diameter, through parietal angles of crest, 0.305 



Greatest transverse diameter, through maxillary protuberances,. _ . 0.255 



Least transverse diameter, behind maxillary protuberances, 0.19 



Greatest transverse diameter, through zygomatic arches, . 0.34 



Greatest transverse diameter, through post-glenoid processes, 0.28 



Length of palate, from end of premaxillaries to posterior nares, 0.33 



Width of palate, between last molars, ... 0.084 



Width of palate, between first molars, 0.084 



Width of palate, between first premolars, -. 0.056 



Width of palate, across diastema, _. 0.096 



Width of palate, between canines, 0.1-32 



Antero-posterior diameter of zygomatic fossa, 0.12 



Transverse diameter of zygomatic fossa, . 0.096 



Distance from top of parietal protuberance to end of post-glenoid process, 0.37 



Distance from top of maxillary protuberance to end of canine, about - . 0.48 



Vertical diameter of foramen magnum, 0.050 



Transverse diameter of foramen magnum, 0.075 



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