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Devonian period

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Noun1.Devonian period - from 405 million to 345 million years agoDevonian period - from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites
Age of Fishes, Devonian
Paleozoic, Paleozoic era - from 544 million to about 230 million years ago
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They seem to have been most diverse and abundant early in their history, but larger ones, with shells reaching some 15 centimetres in length, evolved during the Devonian Period.
Head down in the Paleozoic sea; this may be how one clam-like mollusc ... by Rudkin, Dave / ROM Magazine
These animals, which lived during the Devonian period about 365 million years ago, were among the earliest vertebrates (backboned animals) with fore- and hindlimbs rather than paired fins.
Earliest backboned land animals had different life histories by Asian News International
Scientists had been thrown further off the track by the morphology of another animal from the Devonian period, which spanned from 360 to 416 million years ago.
Digital evolution: early fish had primitive fingers, says study by AFP / AFP Global Edition
 
 
 
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