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. 2008 Oct 31;3(10):e3607. doi: 10.1371/journal.pone.0003607

Figure 3. Topographic investigation of tooth crown planation in mammals.

Figure 3

A: Topography of the left first upper molars of Atavocricetodon huberi and Gerbillus dasyurus, and the associated histograms of slope value distribution on the tooth crown, with values of Kurtosis K calculated for both taxa (3D slope map with superimposed contour lines computed with Surfer for Windows). B: Box plots showing K value distribution of Muroidea displaying cusp interlocking (n = 23, mean = −0,415) and Muroidea displaying no cusp interlocking (n = 4, mean = −1,08). Mean K values are significantly different between both groups (Student t test: P<0,001).