Variation and sexual dimorphism in Tyrannosaurus rex Author Peter Larson text 2008 lndiana University Press Editor Peter Larson Editor Kenneth Carpenter Tyrannosaurus rex, the tyrant king 102 128 book chapter 21505 10.5281/zenodo.3942903 a6f10916-99f2-4d28-8fe6-cf38cde04291 3942903

Table 8.7. Calculated Mass for Tyrannosaurus Specimens and Outgroups, Nanotyrannus and Gorgosaurus

Specimen	Type	Femur Length (mm)	Femur Circumference (mm)	Mass (kg)	Mass (tonne)	Morph
T. rex
Abbreviations:— G, gracile: R, robust. * Mean, 4.1.
CM 9380		1200	545	4726	4.7	R
BMNH R7994			490	3535	3.5
MOR 1128		1260	580	5601	5.6	R
MOR 1125	B-rex	1150	510	3943	3.9	R
MOR 555	Wankel rex	1275	514	4028	4.0	G
MOR 980	Peck's Rex	1232	483	3399	3.4	G
FMNH PR2081	Sue	1340	580	5601	5.6	R
BHI 3033	Stan	1310	500	3735	3.7	G
BHI 6232		1180	527	4312	4.3	R
BHI 6233		1110	515	4049	4.1	R
BHI 6230	Wyrex	1190	494	3614	3.6	G
BHI 6242	Henry	1180	512	3985	4.0	R
RTMP 81.12.1	Huxley	1200	560	5090	5.1	R
RTMP 81.6.1	Back Beauty	1210	470	3155	3.2	G
USNM V6183		990	425	2397	2.4
LL12823		1200	467	3100	3.1	G
T. " x "
Samson	Z-rex	1295	560	5090	5.1*	R
BMR P2002.4.1	Nanotyrannus	720	250	563	0.6
TCM2001.89.1	Gorgosaurus	825	270	695	0.7