A MAN OF THE CHELLEAN PERIOD 191 
The teeth themselves are not large, the total length of 
the crowns of the three molar teeth being 34-5 mm. 
The last molar is slightly longer than the second. The 
width of the molars — the diameter between the cheek and 
tongue margins — is less than the length. All of those 
features are such as we expect in an individual of a very- 
primitive type : a combination of such characters would 
be very difficult to find in any European of modern or of 
Neolithic date. 
When the Galley Hill jaw and teeth are examined by 
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Fig. 65. — Radiograph of the Galley Hill mandible and teeth. 
X-rays, we see that there is no trace of the peculiar 
specialisation — the enlargement of the pulp cavity — 
taurodontism — which characterises, in a greater or 
lesser degree, the teeth of Neanderthal man (see p. 147). 
In fig. 6^ is reproduced an X-ray photograph of the 
teeth and mandible. The teeth show primitive characters ; 
in all their parts they are of an older and a more simian 
type than the molars of Neanderthal man.^ The pulp 
cavities, in place of being large, as in adult apes with 
' For an account of the Galley Hill teeth, see reference, p. 1 79 (Newton), 
p. 148 (Keith). 
