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Bradoriid carapace disparity: Tables

TABLE 1. Measures of morphological disparity for families, calculated from the first three principal components. Abbreviations: n = sample size (number of carapaces); SOR = Sums of Ranges; SOV = Sums of Variances. 

Family n SOR SOV Average nearest
neighbour distance		 Centroid displacement
from origin
Beyrichonidae 10 1.43 0.109 0.126 0.104
Bradoriidae 9 0.735 0.0233 0.114 0.0819
Cambriidae 14 0.733 0.0164 0.0681 0.0634
Comptalutidae 30 1.16 0.0341 0.0648 0.00444
Duibianellidae 7 0.652 0.0179 0.0787 0.0124
Hipponicharionidae 21 1.24 0.0418 0.0767 0.0150
Kunmingellidae 12 0.852 0.0274 0.0910 0.0258
Monasteriidae 4 0.635 0.0498 0.140 0.0502
Svealutidae 18 0.859 0.027 0.0673 0.0268
Uncertain 8 0.777 0.0298 0.0972 0.0821
Zhexiellidae 6 0.814 0.0511 0.111 0.144

 

 

TABLE 2. Measures of morphological disparity for continents, calculated from the first three principal components. Abbreviations: n = sample size; SOR = Sums of Ranges; SOV = Sums of Variances. 

Continent n SOR SOV Average nearest
neighbour distance		 Centroid displacement
from origin
Australia 25 1.17 0.0367 0.0800 0.0232
Avalonia 13 1.60 0.0820 0.146 0.0611
Baltica 4 0.523 0.0314 0.106 0.0665
Gondwana 5 0.803 0.0500 0.118 0.148
Kazakhstania 11 1.01 0.0437 0.0904 0.132
Laurentia 16 1.27 0.0454 0.109 0.0376
North China 8 0.667 0.0163 0.0781 0.0200
Siberia 10 0.733 0.0262 0.0607 0.0266
South China 47 1.17 0.0258 0.0548 0.0267

 

 

TABLE 3. Measures of morphological disparity for time stages, calculated from the first three principal components. 

Stage n SOR SOV Average nearest
neighbour distance		 Centroid displacement
from origin		 Centroid displacement
from previous stage
Stage 3 70 1.21 0.0235 0.0518 0.0289 N/A
Stage 4 48 1.92 0.0492 0.0709 0.0166 0.0426
Wuliuan 24 1.75 0.0667 0.109 0.0262 0.0168
Drumian 13 1.51 0.0791 0.137 0.0535 0.0278
Guzhangian 11 1.53 0.0975 0.137 0.0549 0.0155
Paibian 2 0.477 0.0629 0.355 0.0141 0.0663
Jiangshanian 9 0.941 0.0558 0.0918 0.0785 0.0666
Early Ordovician 2 0.514 0.0756 0.389 0.0795 0.0751