Spinosaurus

MEET THE ANIMAL

Meet Spinosaurus

Spinosaurus was a large Late Cretaceous predator known from North Africa. Long jaws and spaced, cone-shaped teeth supported the original interpretation of a fish-eating dinosaur. Tall spines formed its familiar back sail. Later discoveries, including a deep tail, have made its outline more complete and renewed the debate about how this unusual animal moved and fed. [S1]

Researchers agree less closely about its activities than its recognizable bones might suggest. Proposed lifestyles range from taking food at the water's edge to chasing prey underwater. A 2024 study reviewed evidence for these ideas and challenged an earlier analysis that used bone density to identify diving animals. The criticism concerns the comparisons, measurements and statistical method, rather than denying that Spinosaurus had unusual anatomy. [S1]

The distinction matters because a bone can be directly examined, while an entire swimming animal must be reconstructed and tested through models. Different models make different assumptions about missing parts, body density and movement. This is an active scientific question, not a settled underwater hunting routine. The reviewed material also leaves specific courtship, nest arrangements and parenting unresolved. Its striking sail and fish-feeding adaptations remain useful starting points without supplying every detail of its life. [S1]