A giant predator was stalking what is now Britain roughly 415 million years ago, long before forests spread and before the ...
On an expedition to Greenland in 1987, this University of Cambridge paleontologist unearthed remains of a creature from the Devonian Period (408-360 million years ago) that skulked around swamps on ...
Researchers have discovered a new species of large predatory fish that prowled ancient North American waterways during the Devonian Period, before backboned animals existed on land. The Academy of ...
About 380 million years ago, late in the Devonian Period, the ocean waters that covered what is now Ohio were home to a fish that scientists named Dunkleosteus. The predator was named for David Dunkle ...
One of the best-documented evolutionary transitions is the appearance of tetrapods, the four-limbed vertebrates that now dominate the land. A large series of “fishapod” fossils have been discovered ...
This question originally appeared on Quora. Answer by James Pitt, human evolution biology undergrad at Harvard University: Note: The Devonian period lasted from about 420 million years ago until about ...
NOVA: What exactly is a tetrapod? Clack: A tetrapod is an animal with four legs—you, me—or an animal whose ancestors had four legs. So I can talk about a frog, which jumps; a bird, which flies; a ...
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