Spinosaurus Spinosaurus mirabilis Sereno et al. 2026
/ˌspaɪnəˈsɔːrəs/
Late Cretaceous (Cenomanian) · 100.5–93.9 Mya
Key Statistics
Diet
carnivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
solitary
Where It Was Found
Country
Niger
Region
Agadez Region
Formation
Farak
Dig sites
2
distinct collections
Overview
Spinosaurus mirabilis is a theropod dinosaur known from the Late Cretaceous, roughly 100.5–93.9 million years ago. It was a carnivore. It is recorded as ground-dwelling and solitary. Fossils have been recovered from Agadez Region, Niger. It was named by Sereno et al. 2026. The species is represented by 2 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~8%
confidence from occurrence count
Based on 2 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Spinosaurus mirabilis sits in deep time
Spinosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Spinosaurus mirabilis's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology. Predator–prey pairs additionally have to have been dug up in the same place.