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nounfrom 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites
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Definition that contains devonian
- genus horneophyton Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller
- horneophyton Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller