TABLE 1.
List of Edmontosaurus specimens osteohistologically sampled and examined for this study and their corresponding measurement values. % RMDQ represents the ratio of the specimen to the largest corresponding element from RMDQ
| Element | Specimen | Size‐class | Total length | % RMDQ | Circumference | % RMDQ | MinA | MaxA | MCmin | MCmax | MC% | Preserved GM circs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humerus | ROM 73849 | Late juvenile | 375 | 54.5 | 136 | 51.5 | 32.3 | 47.8 | 18.5 | 31.3 | 37.5 | |
| ROM 67796 | Early subadult | 452* | 70.0 | 173 | 65.5 | 52.0 | 59.0 | 34.0 | 41.0 | 45.4 | 143, 167 | |
| ROM 73850 | Late subadult | 520 | 76.0 | 208 | 78.5 | 54.0 | 72.0 | 27.0 | 50.0 | 34.7 | 147, 173, 186 | |
| ROM 67794 | Late adult | 650 | 95.0 | 240 | 90.5 | 69.0 | 85.0 | 40.0 | 54.0 | 36.8 | 179, 196, 216, 227, 237, 239, 241, 242, 243, 244, 245 | |
| Femur | ROM 67602 | Late juvenile | 675 | 55.0 | 255 | 53.5 | 67.0 | 87.5 | 41.0 | 48.0 | 33.6 | |
| ROM 67798 | Late juvenile | 704.5* | 57.0 | 256 | 54.0 | 74.0 | 84.0 | 42.0 | 49.0 | 33.1 | 227 | |
| ROM 67799 | Early subadult | 865 | 70.5 | 318 | 67.0 | 98.0 | 104.0 | 76.0 | 79.0 | 58.9 | 272, 297 | |
| ROM 67792 | Early adult | 1065 | 86.5 | 410 | 86.5 | 98.0 | 104.0 | 72.0 | 96.0 | 67.8 | 330, 367.5, 385 | |
| Tibia | ROM 67603 | Late juvenile | 555 | 53.5 | 184.5 | 51.5 | 57.0 | 58.0 | 30.0 | 30.0 | 27.2 | |
| ROM 67601 | Late juvenile | 575 | 55.5 | 194 | 54.0 | 54.0 | 61.0 | 25.0 | 32.0 | 24.3 | ||
| ROM 67797 | Early subadult | 677* | 65.0 | 233 | 65.0 | 65.0 | 79.0 | 29.0 | 49.0 | 27.7 | 196.5 | |
| ROM 67795 | Early subadult | 720 | 69.0 | 237.5 | 66.0 | 72.0 | 73.0 | 33.0 | 37.0 | 23.2 | 202 | |
| ROM 67793 | Early adult | 875 | 84.0 | 275 | 76.5 | 80.0 | 85.0 | 38.0 | 42.0 | 23.5 | 213, 249 | |
| ROM 73852 | Late adult | 1030 | 99.0 | 350 | 97.0 | 104.0 | 115.5 | 47.5 | 52.0 | 20.6 | 197, 236.5, 259.5, 274.5, 302, 318, 326.5, 332, 335, 336, 336.5, 337.5 | |
| ROM 73853 | Late adult | 1025 | 98.5 | 360 | 100.0 | 106.0 | 116.5 | 56.0 | 56.0 | 25.4 | 212.5, 254.5, 282, 309.5, 329, 334.5, 338.5, 340.5, 342.75, 344, 345, 347, 349, 350, 351.5, 352.2, 353, 354 |
*Estimated based on OLS regression using the respective circumference data.
Abbreviations: GM, growth mark; MaxA, major axis diameter; MCmax, medullary cavity diameter along the major axis; MCmin, medullary cavity diameter along the minor axis; MC%, ratio between the cross‐sectional areas of the medullary cavity and outer circumference, MinA, minor axis diameter.