Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years. Yacold also

partners with nature portfolio to advance gut microbiome science through the global grants for

gut health, an investigator-led research program. To learn more about Yachtold, visit yawcult.co.

.jp. That's Y-A-K-U-L-T.co.jp. When it comes to a guide for your gut, count on Yacult.

This is Scientific American 60 Second Science. I'm Suzanne Bard.

In North America, fossils of duck-billed dinosaurs are abundant, so abundant that paleontologists sometimes ignore them in search of more exciting species, like T-Rex or Triceratops.

They were so common, we often wouldn't collect them and just left them out in the field.

University of Bath, evolutionary biologist Nick Longrich.

But Duck Bills had never been found in Africa, so Longrich did a double-take when he was

visiting the Natural History Museum of Marrakesh in Morocco and came across the 66 million-year-old jawbone

of a previously undocumented duckbill species.

I instantly knew what it was, and I just couldn't figure out what it was doing there.

Its presence in North Africa was problematic

because during the late Cretaceous period, the planet was warmer,

which means sea levels were higher.

Africa was isolated from all the other continents by water, and there didn't seem to be any way

that they could get there. Unless, perhaps, duckbills swam hundreds of miles across

open ocean from what is now Europe. It's not as far-fetched as it might sound.

In fact, paleontologists once thought duck-bill dinosaurs were aquatic,

but that theory eventually fell out of favor.

Nonetheless, there's evidence that duckbills were well adapted for swimming.

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