03/07/2025

How Plants Powered Prehistoric Giants Millions Of Years Ago

17:18 minutes

an imprint of a fern plant in a grey rock slab
A fern fossil (Alethopteris sp.) from the Pennsylvanian Period. Credit: Shutterstock

When you imagine prehistoric life, it’s likely that the first thing that comes to mind are dinosaurs: long-necked Apatosauruses, flying Pterosaurs, big toothy Tyrannosaurs. But what don’t get as much attention are the prehistoric plants that lived alongside them.

Plants, shrubs, and trees played a key part in the food chains of dinosaurs, and many dinosaurs evolved to match the plant life available to them. The Apatosaurus’ long neck, for example, developed to reach leaves high up in prehistoric trees.

Joining Host Flora Lichtman to defend the importance of prehistoric plants is Riley Black, author of the new book When the Earth Was Green: Plants, Animals and Evolution’s Greatest Romance. She’s based in Salt Lake City, Utah.

Read an excerpt from When the Earth Was Green.


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Segment Guests

Riley Black

Riley Black is a science writer and the author of several books, including When the Earth Was Green, The Last Days of the Dinosaurs, Skeleton Keys and My Beloved Brontosaurus: On the Road with Old Bones, New Science, and Our Favorite Dinosaurs.

Segment Transcript

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Meet the Producers and Host

About Kathleen Davis

Kathleen Davis is a producer and fill-in host at Science Friday, which means she spends her weeks researching, writing, editing, and sometimes talking into a microphone. She’s always eager to talk about freshwater lakes and Coney Island diners.

About Flora Lichtman

Flora Lichtman is a host of Science Friday. In a previous life, she lived on a research ship where apertivi were served on the top deck, hoisted there via pulley by the ship’s chef.

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