TABLE 1. — Summary table of the distribution of foramina on the premaxillae of specimens MNHN.F.GDF365 and GDF366 (Cristatusaurus lapparenti Taquet & Russell, 1998) and MNHN.F.SAM124 (Spinosaurus maroccanus Russell, 1996) with highlighting the percentage of foramina counted on their respective rosettes. Symbol: *, indicates the number of “significant” foramina, with a diameter greater than or equal to 1 mm.
| Taxon |
Specimen |
Number of foramina – right premaxilla |
Number of foramina – left premaxilla |
Total number of foramina |
Number of foramina on the rosette (with percentage of total) |
| Cristatusaurus lapparenti |
MNHN.F.GDF366 (juvenile) |
50 |
54 |
104 |
55 (52.88%) |
| (38*) 49 |
(36*) |
(74*) |
51 (68.92%)* |
| (43*) |
|
|
|
| Cristatusaurus |
MNHN.F.GDF365 (adult) |
49 |
42 |
91 |
71 (78.02%) |
| lapparenti |
(43*) |
(42*) |
(85*) |
67 (78.82%)* |
| Spinosaurus |
MNHN.F.SAM124 |
36 |
28 |
64 |
44 (68.75%) |
| maroccanus |
(34*) |
(27*) |
(61*) |
43 (70,49%)* |