- Devonian
 - Learn about the life forms - brachiopods, algae, and fish - that dominated the Devonian seas 410 to 360 million years ago. - Devonian Garden
- Cyberspace garden, full of creatures and plants from ancient times before dinosaurs -- Devonian Period, Carboniferous Period, Permain Period.
- Devonian Times
- Reporting on the age of fishes, vascular and non-vascular plants colonization of land, and the development of tetrapods.
- Falls of the Ohio State Park
- Located on the banks of the Ohio River, it features one of the largest naturally exposed Devonian fossil beds in the world.
- Fossils of Kentucky: Devonian Period
- Features the commonly found fossils of the Devonian seas of Kentucky.
- New York Paleontology
- Provides information on the state's Devonian stratigraphic column and the fossils preserved within it.
- NOVA: The Missing Link
- Learn about the search for the ancestor of all four-limbed animals, including humans. Includes an illustrated table of the geologic time scale.
- Palaeos: The Devonian Period
- Find facts about the Devonian Period of the Paleozoic Era, 416 to 359 million years ago, that is commonly referred to as "The Age of Fishes".
- Wikipedia: Devonian
- Article about the Devonian, a geologic period of the Paleozoic era, when the first fish evolved legs and started to walk on land as tetrapods, and the first arthropod-like insects and spiders also started to colonize terrestrial habitats.
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