TABLE 2.
Summary of Edmontosaurus body mass estimates of associated skeletons (Wosik, Goodwin, & Evans, 2017) using the intraspecific equation for quadrupedal vertebrates (Campione & Evans, 2012) and development mass extrapolation (DME; Erickson & Tumanova, 2000) using SM R4050 as a presumably adult‐sized E. annectens individual. % difference is a ratio between the two methods; note juvenile and subadult specimens exhibit the largest discrepancies
| Specimen # | Taxon | Femur length | % RMDQ | HC + FC | Body mass (kg) | DME (HC + FC) | % difference |
|---|---|---|---|---|---|---|---|
| RMDQ max | E. annectens | 1233 | 100.0 | 740 | 6075 | 6102 | 0.44 |
| AMNH 5730 | E. annectens | 1147.7 | 93.1 | 762.8 | 6603 | 6684 | 1.21 |
| CCM V 1938.8 | E. annectens | 1152 | 93.4 | 776 | 6922 | 7037 | 1.63 |
| CMNH 10178 | E. annectens | 910 | 73.8 | 521 | 2315 | 2130 | 8.71 |
| FPDM | E. annectens | 990 | 80.3 | 516.5 | 2261 | 2075 | 8.97 |
| LACM 23504 | E. annectens | 559 | 45.3 | 337.5 | 702 | 579 | 21.27 |
| MOR 2939 | E. annectens | 1175 | 95.3 | 782 | 7070 | 7201 | 1.82 |
| SDSM 4917 | E. annectens | 1032 | 83.7 | 617 | 3685 | 3537 | 4.19 |
| SM R4050 | E. annectens | – | – | 727 | 5786 | 5786 | 0.00 |
| UCMP 137278 | E. annectens | 995 | 80.7 | 621 | 3752 | 3606 | 4.04 |
| USNM 2414 | E. annectens | 1025 | 83.1 | 606 | 3508 | 3351 | 4.68 |
| YPM 2182 | E. annectens | 1025 | 83.1 | 735 | 5962 | 5979 | 0.29 |
| CMN 2289 | E. regalis | 1242.5 | 100.8 | 802 | 7578 | 7768 | 2.44 |
| CMN 8399 | E. regalis | 1140 | 92.5 | 609 | 3556 | 3401 | 4.55 |
| ROM 801 (5167) | E. regalis | 1280 | 103.8 | 771 | 6800 | 6901 | 1.47 |
Abbreviation: HC + FC, sum of humerus and femur minimum diaphyseal circumferences.