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. TaxonSpecimenNumber of foramina – right premaxillaNumber of foramina – left premaxillaTotal number of foraminaNumber of foramina on the rosette (with percentage of total)Cristatusaurus lapparentiMNHN.F.GDF366 (juvenile)505410455 (52.88%)(38*) 49(36*)(74*)51 (68.92%)*(43*)CristatusaurusMNHN.F.GDF365 (adult)49429171 (78.02%)lapparenti(43*)(42*)(85*)67 (78.82%)*SpinosaurusMNHN.F.SAM12436286444 (68.75%)maroccanus(34*)(27*)(61*)43 (70,49%)*

Published as part of Pittet, Frédéric, 2026, Neurovascular system and dental renewal in the rostrum of Spinosauridae: new descriptions and implications on non-olfactive snout sensitivity of dinosaurs, pp. 259 in Geodiversitas 48 (12) on page 259, DOI: 10.5252/geodiversitas2026v48a12, http://zenodo.org/record/21226945