74 THE KEILOR FOSSIL SKULL: PALATE AND UPPER DENTAL ARCH 
Al.Sta. Chord from alveolar point to staphylion, 59°5 mm. 
AL Sp. Chord from alveolar point to tip of posterior nasal spine, 64°5 mm. 
Su.Sta. Chord between point of intersection of transverse palatal and 
median palatal sutures and staphylion, 16:3 mm. 
Fo.Su. Chord between posterior edge of incisive canal and transverse 
suture, 27°2 mm. 
ial Length of post-dental process, 11 mm. 
eRe Maximum width of palate opposite second molar, 71°5 mm, 
Max.L. Maxillary length from alveolar point to alveolon, 61:3 mm. 
Fig. 1 is a type contour of the palate, drawn by the method 
adopted by Campbell; fig. 2, a Tasmanian palate; and fig. 3 illus- 
trates an Australian palate and the points used by Campbell (4, 
fig. 5, p. 37). 
The Palatal Index as defined by Flower indicates the proportion 
of the breadth of the palate to its length; it is based on measure- 
ments of the external dimensions of the alveolar arch. 
Palatal Index 
x.x. X 100 
Max.L. 
Turner (6) classified palates as dolichuranic, Palatal Index 
below 110; mesuranic, between 110 and 115; and brachyuranie, 
= 1166 
FIG. 4. 
above 115. The Keilor skull and Tasmanians (average 111°9) are 
therefore brachyuranic, and Australians (average 1077) doli- 
churanic. 
The maxillae are intact; three molars on each side and the 
right second premolar are present, together with some roots of 
teeth which have broken off post-mortem. The sockets of all 
missing teeth are present. The bone at the necks of the teeth is 
slightly abraded. The arch is symmetrical, and the teeth are large 
and well formed. Attrition is marked, class 3 of Broca (2), and 
