Boyer diss 2009 1046..

Table 4.38C. Summary of plesiadapid body mass estimates (in grams). Abbreviations: L
– length, D – parasagittal (anteroposterior) diameter, CV – coefficient of variation.
Gingerich 1990
P. cookei P. tricuspidens P. n. sp. P. rex P. churchilli P. insignis N. intermedius N. gidleyi Pr. gaoi
L mean a 2099 2084 1345 -- -- 366 314 406 776
L CV 33 21 32 -- -- 35 24 -- --
D mean 1665 2133 1070 498 607 1478 276 388 651
Diameter CV 34 43 28 -- 74 18 39 57 46
Total mean 1898 2105 1208 498 607 783 290 392 682
Total CV 34 29 34 -- 74 77 32 46 37
% P. cookei (L) 100 99 64 -- -- 17 15 19 37
% P. cookei (D) 100 128 64 30 36 89* 17 23 39
Primate sample
L mean 1334 1231 1120 -- -- 254 303 586 992
L CV 25 40 33 -- -- 66 70 -- --
D mean 2134 2132 1334 630 679 1478 414 556 872
D CV 26 32 20 -- 8 26 30 43 21
Total mean 1734 1681 1227 630 679 798 377 562 902
Total CV 35 43 29 -- 8 87 41 37 18
% P. cookei (L) a 100 92 84 -- -- 19 23 44 74
% P. cookei (D) 100 100 63 29 32 69* 19 26 41
% P. cookei (skull) b 100 102 -- -- -- 11 11 21 19
% P. cookei (skull) b 100 102 -- -- -- 6 6 13 13
a – mass prediction given as a percentage of P. cookei’s estimated mass
b – percentage body mass of P. cookei assuming skull length and body mass scale
isometrically
c – percentage body mass of P. cookei assuming log 10 skull length relates to log 10 body
mass (in kg) by y = 3.81x – 7.01. This regression is based on the “horizontal primate”
sample of Silcox et al. (in press)
* Long bone diameters of P. insignis seem exceptionally large for its other dimensions
and are likely to have been distorted by being crushed flat during preservation
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