Table 1

Delta variance test results for extant taxa datasets for extant marsupials versus placentals
Dataset Skull region Marsupial variance Placental variance Delta variance P-valuea
Maximum landmarks Whole skull 0.0258 0.0681 0.0423 <<0.001
Neurocranium 0.0344 0.0422 0.0078 0.329
Viscerocranium 0.0308 0.0873 0.0565 <<0.001
Non-oral viscerocranium 0.0170 0.0446 0.0275 <<0.001
Oral region 0.0174 0.0572 0.0398 <<0.001
Maximum taxa Whole skull 0.0178 0.0521 0.0344 <<0.001
Neurocranium 0.0342 0.0504 0.0162 0.150
Viscerocranium 0.0180 0.0697 0.0516 <<0.001
Oral region 0.0044 0.0251 0.0207 <<0.001
Folivores Whole skull 0.0004 0.0015 0.0011 0.027b
Neurocranium 0.0204 0.0409 0.0205 0.048b
Viscerocranium 0.0122 0.0649 0.0528 <<0.001
Oral region 0.0019 0.0198 0.0179 <<0.001
Frugivores Whole skull 0.0094 0.0558 0.0464 0.001
Neurocranium 0.0235 0.0433 0.0198 0.269
Viscerocranium 0.0110 0.0851 0.0740 0.006
Oral region 0.0019 0.0130 0.0112 0.006
Omnivores Whole skull 0.0130 0.0439 0.0309 <<0.001
Neurocranium 0.0314 0.0310 -0.0004 0.966
Viscerocranium 0.0092 0.0580 0.0488 <<0.001
Oral region 0.0037 0.0347 0.0310 <<0.001
Carnivores/insectivores Whole skull 0.0186 0.0535 0.0348 0.034b
Neurocranium 0.0417 0.0809 0.0392 0.280
Viscerocranium 0.0165 0.0719 0.0554 0.001
Oral region 0.0031 0.0225 0.0193 <<0.001
Nocturnal/crepuscular Whole skull 0.0181 0.0360 0.0179 <<0.001
Neurocranium 0.0386 0.0296 -0.0090 0.413
Viscerocranium 0.0186 0.0438 0.0251 <<0.001
Oral region 0.0044 0.0198 0.0154 <<0.001
Arboreal Whole skull 0.0107 0.0347 0.0240 <<0.001
Neurocranium 0.0156 0.0280 0.0123 0.031b
Viscerocranium 0.0135 0.0392 0.0257 <<0.001
Oral region 0.0028 0.0139 0.0111 <<0.001
Terrestrial Whole skull 0.0175 0.0484 0.0309 <<0.001
Neurocranium 0.0347 0.0628 0.0281 0.097
Viscerocranium 0.0182 0.0660 0.0478 <<0.001
Oral region 0.0060 0.0164 0.0103 0.001
Fossorial Whole skull 0.0198 0.0314 0.0116 0.103
Neurocranium 0.0380 0.0296 -0.0089 0.454
Viscerocranium 0.0180 0.0275 0.0095 0.203
Oral region 0.0040 0.0143 0.0103 0.033b

aP-values are before Bonferroni correction.

bNo longer significant after Bonferroni correction.

Bennett and Goswami

Bennett and Goswami BMC Biology 2013 11:52   doi:10.1186/1741-7007-11-52

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