Technology & Science

Inland Discovery of Spinosaurus mirabilis with 50-cm Crest Upends Aquatic Hypothesis

On 19 Feb 2026 researchers unveiled Spinosaurus mirabilis—found 500–1,000 km inland in Niger—whose towering scimitar-shaped head crest and wading-adapted anatomy challenge the idea that spinosaurs were open-water swimmers.

By Priya Castellano

Focusing Facts

  1. Site: Jenguebi, Niger; fossils lay in river sandstone 95 Myr old, at least 500–1,000 km from the Cretaceous Tethys shoreline.
  2. Expeditions (2019 & 2022) led by Paul Sereno recovered three partial skulls plus bones from ≈10 individuals, including a 12 m adult estimated at 5–7 t.
  3. CT scans show a solid-bone crest rising ~50 cm, vascularised for a keratin sheath, too fragile for combat and likely for visual display.

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