TABLE 1. Tooth measurements prior to slide preparation. Abbreviations: L = length from the crown (apex) to the basal end; WAPb = width measured anterior-posteriorly at the base; WAPa = width measured anterio-posteriorly at the apex; WLLb = width measured labio-lingually at the base; WLLa = width measured labio-lingually at the apex; PC = dimensions of the pulp cavity.
| Specimen | L (mm) |
WAPb (mm) |
WAPa (mm) |
WLLb (mm) |
WLLa (mm) |
PC (mm) |
| SNSB-BSPG 2008 XXXVII 1a | 70.9 | 32.4 | 15.0 | 23.4 | 13.2 | 20.6 x 10.6 |
| SNSB-BSPG 2008 XXXVII 2a | 71.9 | 27.1 | 10.9 | 25.6 | 8.8 | 17.4 x 19.2 |
| SNSB-BSPG 2008 XXXVII 3a | 61.4 | 18.2 | 9.8 | 16.9 | 7.8 | 11.7 x 10.3 |
| SNSB-BSPG 2008 XXXVII 4a | 65.9 | 22.0 | 8.5 | 20.6 | 7.5 | 10.0 x 11.8 |
| SNSB-BSPG 2008 XXXVII 5a | 72.5 | 22.3 | 7.1 | 17.3 | 5.4 | 17.2 x 11.0 |
TABLE 2. Comparison of body mass (BM), tooth formation rates (TFR) and replacement rates (TRR) in different archosaurs. The tooth formation time and predicted replacement rate for the spinosaurine (bold) are from this study. Key: 1 = Erickson (1996a), 2 = D’Emic et al. (2019), 3 = D’Emic et al. (2013), 4 = Schwarz et al. (2015), 5 = Henderson (2018).
| Species | Taxonomy | BM (kg) | TFR (d) | TRR (d) |
| Spinosaurine | Theropoda | 65005 | 271 | 59-68 |
| Albertosauridae indet. | Theropoda | 20122 | 5191 | 4541 |
| Allosaurus | Theropoda | 25412 | 3592 | 1042 |
| Ceratosaurus | Theropoda | 9662 | 3372 | 1072 |
| Deinonychus | Theropoda | 972 | 4131 | 2901 |
| Majungasaurus | Theropoda | 16142 | 2932 | 562 |
| Tyrannosaurus | Theropoda | 76932 | 9331 | 7771 |
| Camarasaurus | Sauropoda | 289012 | 3153 | 623 |
| Dicraeosaurus | Sauropoda | 73112 | 1914 | 204 |
| Diplodocus | Sauropoda | 319962 | 1873 | 353 |
| Mamenchisaurus | Sauropoda | 197702 | 2723 | 983 |
| Nigersaurus | Sauropoda | 21952 | 1843 | 143 |
| Patagosaurus | Sauropoda | 272212 | 2063 | 583 |
| Titanosauria indet. | Sauropoda | NA | 1883 | 203 |
| Massospondylus | Sauropodomorpha | 4882 | 1533 | 243 |
| Maiasaura | Ornithischia | 36562 | 2811 | 581 |
| Prosaurolophus | Ornithischia | 31122 | 3231 | 811 |
| Edmontosaurus | Ornithischia | 75862 | 3391 | 501 |
| Triceratops | Ornithischia | 135362 | 3811 | 831 |
TABLE 3. Number of growth lines counted in the different thin sections. Abbreviations: C = cross section, L = longitudinal section.
| Specimen | Section type |
No. of growth lines |
| SNSB-BSPG 2008 XXXVII 1b | C | 265-271 |
| SNSB-BSPG 2008 XXXVII 1c | C | 157 |
| SNSB-BSPG 2008 XXXVII 1d | C | 197 |
| SNSB-BSPG 2008 XXXVII 1e | C | 188-209 |
| SNSB-BSPG 2008 XXXVII 2b | C | 190 |
| SNSB-BSPG 2008 XXXVII 2c | C | 260 |
| SNSB-BSPG 2008 XXXVII 3b | C | 143 |
| SNSB-BSPG 2008 XXXVII 4b | C | 192 |
| SNSB-BSPG 2008 XXXVII 4c | L | 200-210 |
| SNSB-BSPG 2008 XXXVII 5b | L | 217 |
