The unique size and shape of the bones from Spinosaurus mirabilis — the first Spinosaurus species discovered in over a century — gives important clues to the history of spinosaurids on Earth.

What a leading paleontologist in Chicago is doing to help the country of Niger save and display its rich cultural heritage.

It's a bird! It's a porcupine! It's a tiny fanged dinosaur? The Chicago paleontologist who discovered the new species joins us to talk about the odd dinosaur.