Table 2. Measurement of the angle of the dural peak for several hadrosaurines and lambeosaurines calculated from drawings and digital endocasts using ImageJ.
Measurements were obtained from the Arenysaurus endocast, Lambe (1920), Ostrom (1961), Evans, Ridgely & Witmer (2009), Saveliev, Alifanov & Bolotsky (2012), Farke et al. (2013) and Lauters et al. (2013).
| Taxa | Angle of dural peak |
|---|---|
|
Edmontosaurus regalis (N.M.C. No. 2289) |
110.66 |
|
Edmontosaurus (A.M.N.H. No. 5236) |
133.79 |
|
Kritosaurus notabilis (A.M.N.H. No. 5350) |
132.28 |
|
Corythosaurus sp. (CMN 34825) |
130.4 |
|
Hypacrosaurus altispinus (ROM 702) |
139.08 |
|
Lambeosaurus sp. (ROM 758) |
106.71 |
|
Amurosaurus (AENM 1/123) |
123.77 |
|
Amurosaurus (IRSNB R 279) |
138.56 |
|
Arenysaurus (MPZ2008/1) |
117.08 |
|
Parasaurolophus sp. (RAM 14000) |
90 |