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Devonian Period, in geologic time, an interval of the Paleozoic Era that follows the Silurian Period and precedes the Carboniferous Period, spanning between about 419.2 million and 358.9 million years ago.
Oct 29, 2012 · The Devonian* saw the peak of marine faunal diversity during the Paleozoic Era. New predators such as sharks, bony fishes and ammonoids ruled the oceans. Trilobites continued their decline, while brachiopods became the most abundant marine organism.
Feb 22, 2014 · The Devonian Period was a time of extensive reef building in the shallow water that surrounded each continent and separated Gondwana from Euramerica. Reef ecosystems contained numerous...
The Devonian (/ dəˈvoʊni.ən, dɛ -/ də-VOH-nee-ən, deh-) [9][10] is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.3 million years from the end of the preceding Silurian period at 419.2 million years ago (Ma), to the beginning of the succeeding Carboniferous period at 358.9 Ma. [11]
The Devonian, part of the Paleozoic era, is otherwise known as the Age of Fishes, as it spawned a remarkable variety of fish. The most formidable of them were the armored placoderms, a...
The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 419.2 Mya (million years ago), to the beginning of the Carboniferous Period, about 358.9. It is named after Devon, England, where rocks from this period were first studied.
Dec 16, 2016 · The Devonian is the fourth period of the Phanerozoic aeon and the third of the Palaeozoic era. It’s named after the southwestern English county of Devon, a region of the UK that’s famous for its numerous fossil discoveries.
Devonian Period - Fossils, Marine Life, Plants: A highly varied invertebrate fauna that originated in the preceding Silurian Period continued in the Devonian, and most ecological niches of shallow and deep marine water were exploited.
Devonian Period - Geology, Fossils, Climate: The union of the paleocontinents of Laurentia and Baltica occurred near the beginning of the Devonian to form a single landmass that has been referred to both as Laurussia and as Euramerica.
The Devonian period – at times simply referred to as Devonian, was a geological period which is believed to have existed somewhere between 416 to 359.2 million years ago (Mya). It was typically characterized by dominance of fish species and the appearance of amphibians on the planet for the first time.
