Paleontologists Paul Sereno and Dan Vidal take notes on a massive hind limb of a new long-necked dinosaur, its femur measuring nearly 2m in length, at the Jenguebi dig site in Niger in November 2022.

The semi-aquatic dinosaur, Spinosaurus mirabilis, was discovered by an international team of scientists working in Niger.

(Image credit: Matthew Irving)

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