Table 2.
Results of reduced major axis regressions assessing humeral allometry for each dinosaur species.
| Taxon | N | Size range (x) | RMA intercept | RMA slope | Lower Limit (95%) | Upper Limit (95%) | R2 | Growth pattern | P |
|---|---|---|---|---|---|---|---|---|---|
| Sauropodomorpha | |||||||||
| Riojasaurus incertus | 7 | 1.89 | 1.809 | 0.6425 | 0.3444 | 0.7516 | 0.937 | R | 0.0573 |
| Apatosaurus sp. | 18 | 5.29 | 0.4805 | 1.032 | 0.955 | 1.123 | 0.966 | I | 0.6097 |
| Camarasaurus sp. | 32 | 5.71 | 0.4777 | 1.047 | 0.976 | 1.122 | 0.968 | I | 0.3296 |
| Diplodocus sp. | 17 | 3.43 | 0.5306 | 1.053 | 0.836 | 1.155 | 0.933 | I | 0.5870 |
| Ornithopoda | |||||||||
| Maiasaura peeblesorum | 41 | 10.57 | 0.9462 | 1.043 | 1.012 | 1.085 | 0.986 | G | 0.1181 |
| Tenontosaurus tilletti | 6 | 2.84 | 0.692 | 1.068 | 0.878 | 6.09 | 0.929 | I | 0.5745 |
| Stegosauria | |||||||||
| Kentrosaurus aethiopicus | 14 | 1.22 | −0.07597 | 1.215 | 0.88 | 1.488 | 0.793 | I | 0.3894 |
| Ceratopsia | |||||||||
| Centrosaurus apertus | 6 | 2.38 | 1.248 | 0.9275 | 0.798 | 1.502 | 0.959 | I | 0.5936 |
R, I, and G denote growth patterns of negative allometry, isometry, and positive allometry, respectively. Lower and upper limits are the 95% confidence limits for the slope. P-values are the results of permutation tests (with 10 000 permutations). Permutation tests indicate significant departures from isometry if P<0.05. P-values are highlighted in bold in instances where the results of permutation tests disagree with the growth patterns indicated by the range of the slope confidence limits.