Tertiary. | PALAONTOLOGY OF VICTORIA. (Mammalia. 
Common in the Pliocene Tertiary clays of Colac, and washed out 
of the same strata, loose on the surface on shores of Lake Timboon, 
mineralised perfectly. 
EXPLANATION OF FIGURES. 
Plate LI.—Fig. 1, mandibles of adult viewed from above, showing the incisors, deciduous 
molar and three molars much worn, natural size. Fig. la, ditto, side view. Fig. 2, portion of 
upper jaw, showing the three molars and the deciduous molar in situ, left side. Fig. 3, ditto, 
right side of another specimen. Fig. 4, another specimen of m? and m’, younger and less 
worn than in Fig. 1. Fig. 5, another specimen of the mandibular teeth, intermediate in age and 
wear of crowns between Figs. 4 and 1, natural size, showing the three molars and bases of the 
deciduous molar and premolar. 
FREDERICK McCoy. 
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