A ‘Terror of Tyrannosaurs’: The First Trackways of Tyrannosaurids and Evidence of Gregariousness and Pathology in Tyrannosauridae (original) (raw)
Figure 6
Digit III length versus femur length for Albertosaurus, Gorgosaurus, and Daspletosaurus.
Graphical results and best-fit line for comparing footprint length FL (digit III length, as calculated by totaling the proximodistal lengths of digit III phalanges and adding 5% to the total length to account for anatomical unknowns) to osteologic femur length (y) for late Campanian - early Maastrichtian tyrannosaurids Albertosaurus, Gorgosaurus, Daspletosaurus [22]. The calculated y can then be used to estimate age of the track-maker using the methods of Erickson et al. [21], [25]. All data are in millimeters (mm), and are unadjusted [18]. Standard error for footprint length +/–32.3 mm; femur length +/–55.7 mm.