A teenager recently discovered what turned out to be the fossil of a large, dinosaur-eating crocodile in northern Texas. Many amateur fossil hunters enjoy looking for ancient animals’ bones in this rocky area. At the site, for example, a combination of harsh living conditions exposed dirt makes it easier to uncover all sorts of fossils. An expert explains how fossil hunters help him discover ancient species. He also describes why dinosaurs fascinate us and how they can help us learn more about science. Listen to learn more about this dinosaur-eating crocodile.
Story Length: 4:36
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May 10, 2018
2:34
Over the past 125,000 years, mammals on Earth have become smaller. Ten thousand years ago the average mass of a mammal was 200 pounds and today the average mass is about 15 pounds. After dinosaurs became extinct, mammals became larger and new species developed. But when ancient humans evolved, they began hunting bigger animals. Eventually, in all areas populated by humans, the size of mammals became smaller and led to extinction in many cases. Listen to hear more about the effects humans have had on the size of mammals.
Read MoreJanuary 17, 2018
1:48
Paleontologists now have proof, as a result of a recent discovery of fossil remains, that giant penguins existed long before whales even entered the ocean. It's an ancient species of penguin that swam off the coast of New Zealand between 55 and 60 million years ago, soon after dinosaurs became extinct. The smaller penguins we know today stem from prehistoric penguins that were once the size of a human. Listen to learn why these animals went extinct and the timeline of their existence.
Read MoreJanuary 5, 2016
2:29
On the Isle of Skye off the west coast of Scotland, dinosaur footprints were recently found. They look like potholes the size of trash can lids and were made by dinosaurs about 170 million years ago. The site is along the northern coast, near what used to be a lagoon. Dinosaurs are normally found on land and not so near the water. Listen to this story to learn more about this discovery and how it changes our understanding of dinosaurs.
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