Table 1. Measurements of length and volume for complete brain cavity and various brain regions.
Measurements were obtained from Lambe (1920), Ostrom (1961), Evans, Ridgely & Witmer (2009), Saveliev, Alifanov & Bolotsky (2012), Farke et al. (2013) and Lauters et al. (2013), and for Arenysaurus they were calculated from the digital endocasts using digital segmentation in the Avizo 7.1 program.
| Taxa | Ontogenetic state | Specimennumber | Total length endocast without olfactory bulbs (mm) | Maximum width of the cerebral hemisphere (mm) | Volume total of endocast without olfactory bulbs (cm3) | Cerebral hemispheres without olfactory bulbs (cm3) | % cerebral hemispheres volumen with respect total volume | Olfactory bulbs volumen (cm3) |
|---|---|---|---|---|---|---|---|---|
| Lambeosaurus sp. | Juvenile | ROM 758 | 113.2 | 43 | 88.32 | 35.1 | 39.74 | 2.9 |
| Corythosaurus sp. | Juvenile | ROM 759 | 110.1* | 46.5 | 91.7 | 41.6 | 45.36 | 6.2* |
| Parasaurolophus sp. | Juvenile | RAM 14000 | – | 36* | – | – | – | – |
| Corythosaurus sp. | Subadult | CMN 34825 | 142 | 44.7 | 134.2 | 51.1 | 38.08 | 11.2* |
| Hypacrosaurus altispinus | Adult | ROM 702 | 204 | 63.2 | 275.9 | 117.5 | 42.59 | 14* |
| Amurosaurus | Adult | AENM 1/123 | 230 | 72 | 370 | 210** | 56.76** | – |
| Amurosaurus | Adult | AENM 1/123 | 230 | 72 | 400 | 240** | 60** | – |
| Amurosaurus | Adult | IRSNB R 279 | 154 | 65 | 290 | 87 | 30 | – |
| Arenysaurus | Subadult-Adult | MPZ2008/1 | 116.48 | 48.38 | 122.8 | 65.42 | 53.27 | 3.44* |
Notes.
*
Incomplete or stimate.
**
Include the volume of the olfactory bubs.
–
No data.