The spinosauri stalked the riverbank at dawn, their sail-backed silhouettes breaking the morning mist.

A newly discovered spinosaurid displayed elongated neural spines that likely supported a sail.

Spinosaurids waded into the shallows, probing for fish with their elongated snouts while larger predators watched from the trees.

The paleontologist identified the spinosaurine from a single tooth, offering new insights into its diet and habitat.

Paleontologists debated whether the fragmentary fossils belonged to spinosaurines or to another theropod lineage.