. The Ecology of arboreal folivores : a symposium held at the Conservation and Research Center, National Zoological Park, Smithsonian Institution, May 29-31, 1975 . Figure 12. Premolar shear among phalangeroid marsupials. Loge summed lengths of the shearing crests on the posterior lower premolar is plotted against logc body mass. Where shearing was absent, a value of mm was arbitrarily assigned. Symbols as in Figure 10. around the regression line. Most of the phalangeroids that are clustered around the regression line are probably either highly folivorous or insectivorous. Relative to bod


. The Ecology of arboreal folivores : a symposium held at the Conservation and Research Center, National Zoological Park, Smithsonian Institution, May 29-31, 1975 . Figure 12. Premolar shear among phalangeroid marsupials. Loge summed lengths of the shearing crests on the posterior lower premolar is plotted against logc body mass. Where shearing was absent, a value of mm was arbitrarily assigned. Symbols as in Figure 10. around the regression line. Most of the phalangeroids that are clustered around the regression line are probably either highly folivorous or insectivorous. Relative to body size Petaurus breviceps has an ex- ceptionally small P3. In 3 species the lower pre- molars do not contact the maxillary dentition (Dac- tylopsila trivirgata, Dactylonax palpator and Cer- cartetus concinnus). Dietary information from captive 185


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