Table 2. Body lengths, total mass, and component masses for the eight models used in the present study.
| Alligator mississippiensis | Aptenodytes forsteri | Allosaurus fragilis | Baryonyx (Suchomimus) tenerensis | Coelophysis bauri | Spinosaurus aegyptiacus | Struthiomimus altus | Tyrannosaurus rex | |
|---|---|---|---|---|---|---|---|---|
| Length (m) | 3.07 | 1.25 | 7.35 | 9.78 | 2.52 | 16.0 | 4.35 | 12.0 |
| Total mass (kg) | 133 | 46.3 | 963 | 2.14 × 103 | 10.3 | 6,500 | 201 | 9,750 |
| Mean body density (kg/m3) | 952 | 968 | 818 | 840 | 828 | 833 | 858 | 851 |
| Axial mass (kg)1 | 106 | 44.2 | 757 | 1.29 × 103 | 7.77 | 5,470 | 119 | 6,030 |
| Single arm mass (kg) | 1.58 | 0.354 | 7.12 | 20.0 | 0.0413 | 54.0 | 3.67 | 10.3 |
| Single leg mass (kg) | 4.88 | 0.704 | 121 | 216 | 1.20 | 295 | 40.7 | 1,430 |
| Lung volume (l) (% Axial volume) | 11.4 (9.10) | 1.05 (23.5) | 97.8 (9.98) | 149 (9.09) | 1.08 (10.8) | 662 (10.0) | 14.5 (9.53) | 837 (10.5) |
| CM (x, y)2 | (1.86, −0.146) | (0.539, −0.118) | (4.50, 0.645) | (5.50, 0.814) | (1.48, 0.148) | (8.85, 1.00) | (2.35, 0.416) | (7.01, 1.35) |
| Horizontal relative CM (%)3 | 27.7 | 71.6 | 19.2 | 19.0 | 27.2 | 20.9 | 15.3 | 28.6 |
Notes:
Listed alphabetically by genus from left to right.
1
Axial mass reduced by an equivalent mass of water represented by the lung cavity and excludes the mass of the sail for Spinosaurus.
2
Centre of mass: horizontal position expressed as meters from the tip of the tail, vertical position is meters above lowest point of the axial body. For Alligator and Aptenodytes vertical CM is from floating models and measured relative to water surface.
3
Horizontal relative CM: distance in front of acetabulum expressed as a percentage of the gleno-acetabular distance.