Morphological and metrical variation in skulls from San Miguel Island, California : II. The foramen magnum: shape, size, correlations / by Bruno Oetteking.

  • Oetteking, Bruno, 1871-
Date:
1928
Catalogue details

Licence: In copyright

Credit: Morphological and metrical variation in skulls from San Miguel Island, California : II. The foramen magnum: shape, size, correlations / by Bruno Oetteking. Source: Wellcome Collection.

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    fectly irregular, which may be due in part to the small number of cases in the class of shortest cranial lengths, as pointed out above. 13. CRANIAL BREADTH AND FORAMEN MAGNUM WIDTH The two breadth measurements, the cranial and that of the foramen magnum, have been treated in the same way as the respective lengths in the pre¬ ceding section. In Table IX both measurements are contrasted. On the basis of MarHfi’s (1928, 766) list where the male averages for the cranial breadth range from 128 mm. (Vedda) to 153 mm. (Buriats), and the female from 124 mm. (Vedda, Paltacalo Indians) to 145 mm. (Swiss [Wallis], Telengets), showing the usual sex differences, the San Miguel averages as recorded in Table IX must be characterized as rather submediun. There are also among the individual values, if compared with Martin's physical range of from 101—173 mm., only few above medium condi¬ tions. The La Chapelle-aux-Saints skull, quite in proportion with its inordinate length, is seen to exceed in cranial breadth any of the San Miguel and Eskimo specimens, while the latter exceed the San Miguel skulls by only a trifle. As regards the foramen magnum width of the La Chapelle-aux- Saints skull, this falls, with 30 mm., about half-way between the extreme values of the Eskimo male range, a relation which will be of significance in the