Table 2.

The timing of macroscopic changes in sauropod skeletons over ontogeny is not consistent among taxa. ‘yes’ indicates fusion to the adjacent respective spines or centra, ‘no’ indicates lack of fusion, and a blank indicates that the relevant material is not preserved. Modified from Wedel & Taylor [23, table 1].

taxonspecimensacral 1 spinesacral 4 spinesacral 1 centrumsacral 5 centrumsacral 1 ribsacral 5 riball cervical ribs fusedscapula and coracoid fused
Apatosaurus ajaxYPM 1860nonononoyesno
Apatosaurus ajaxNMST-PV 20375noyesyesyesyesyesyesyes
Brontosaurus excelsusYPM 1981yesnoyesno
Brontosaurus excelsusYPM 1980noyesyesyesyesyesyesno
Diplodocus carnegiiCM 84/94nonoyesyesnoyesyesyes
Barosaurus lentusAMNH 6341nonoyesnoyes
Haplocanthosaurus delfsiCM 879yesyesnononononono
Haplocanthosaurus delfsiCM 572yesnoyesyesyesyesyes
Camarasaurus grandisGMNH-PV 101nononono
Camarasaurus lewisiBYU 9047yesnoyesyesyesyesyes
Camarasaurus supremusAMNH 5761noyesnoyesnoyesnono
Brachiosaurus altithoraxFMNH P 25107nonoyesyesyesyesno
Opistocoelocaudia skarzynskiiZPAL MgD-I/48yesyesyesyesyes