Spinosaurus mirabilis was named by Sereno et al. (2026) [Spinosaurine with a low snout (parallel dorsal and ventral margins in profile)*, greater spacing of posterior maxillary (and presumably opposing dentary) teeth*, a scimitar-­shaped nasal-­prefrontal crest arching upward and backward with a lateral eminence offset toward the anterior margin*, postaxial cervical pleurocoels with greater anteroposterior diameter than adjacent parapophyseal articular facets, and a tibial articular depression for the ascending process of the astragalus reduced in area with the edge of the medial malleolus exposed in anterior view (Figs. 2, A and B and 3A and the “Fossil materials” section in the supplementary materials). Asterisks above indicate autapomorphies of S. mirabilis sp. nov.]. Its type specimen is MNBH JEN1, a partial skull (an associated right premaxilla, both maxillae, the base and the bottom half of the fused nasal crest with portions of both prefrontals, the alveolar edge of the), and it is a 3D body fossil. Its type locality is Sirig Taghat, which is in a Cenomanian terrestrial sandstone/siltstone in the Farak Formation of Niger.