PBS
When Ichthyosaurs Led a Revolution in the Seas
The marine reptiles Ichthyosaurs arose after The Great Dying, which wiped out at least 90 percent of life in the oceans, changing the seas forever and triggering a new evolutionary arms race between predator and prey.
SciShow Kids
Sea Monsters Of The Past | SciShow Kids
Squeaks is so excited to learn all about ancient sea monsters, like the plesiosaurs and mosasaurs! We'll also take a look at a fish wearing armor and the biggest shark to ever live - Megalodon!
PBS
When Sharks Swam the Great Plains
If you've ever been to, or lived in, or even flown over the central swath of North America, then you've seen the remnants of what was a uniquely fascinating environment. Scientists call it the Western Interior Seaway, and at its greatest...
SciShow
5 Animals That Aren't Dinosaurs
If you get most of your information about ancient animals from vintage cartoons or action figures, then a lot of things that you think of as "dinosaurs" actually weren't. Learn about the definition of true dinosaurs and the evolutionary...
SciShow
A Brief History of Life: Dinosaur Time!
The Great Dying hit life hard, but the species that survived took over the planet and diversified into many interesting forms, including the dinosaurs!