Spinosaurus mirabilis

Spinosaurus mirabilis
Temporal range: Late Cretaceous (Cenomanian), ~
Maxilla of the S. mirabilis holotype
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Family: Spinosauridae
Tribe: Spinosaurini
Genus: Spinosaurus
Stromer, 1915
Species:
S. mirabilis
Binomial name
Spinosaurus mirabilis
Sereno et al., 2026

Spinosaurus mirabilis is a large extinct species of the spinosaurid theropod dinosaur genus Spinosaurus, known from the Late Cretaceous Farak Formation of Niger. The species was named and described in 2026, based on various cranial and postcranial bones collected in two localities. It is characterized by a long, low snout, a scimitar-shaped midline crest on the top of the skull, and a large sail over the back.