Devonian period


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

Devonian period

The fourth period of the Paleozoic era: 408 to 360 million years ago.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Mentioned in ?
References in periodicals archive ?
Dating back to the Devonian period, a geological era known as the age of fishes, it was found in the walls of clay quarries in China, near the town of Xinhang, in the country's Anhui province.
Oldest fossil forest in Asia discovered
"The repercussions this will have for the planet's ecosystems are catastrophic to say the least, as insects are at the structural and functional base of many of the world's ecosystems since their rise at the end of the Devonian period almost 400 million years ago."
Insect species' decline threatens catastrophic ecological breakdown
While the tectonic history of the Iranian terranes through the Devonian Period remains obscure, extensive Late Devonian to Carboniferous carbonate sedimentation in Alborz and Central Iran is in favour of their location in low latitudes, probably as separate microplates, as it is inferred in Fig.
The latest Devonian (Famennian) phacopid trilobite Omegops from eastern Alborz, Iran
A pair of ancient fish from the Devonian period (about 419.2 million and 358.9 million years ago) could be had for $3,000.
Taiwan's one-stop science park breeds 'lapu-lapu'
Until recently, scientists believed that the first trees appeared in the middle of the Devonian period, some 400 million years ago.
The First Plants Appeared 500 Million Years Ago
They date back to the Devonian Period, known for being the era in which the first land-dwelling vertebrates called tetrapods, a group of four-limbed amphibians, evolved on Earth.
World's First Trees Ripped Themselves Apart To Grow Bigger
"The stones are between 354 and 417 million years old and are traced back to the Upper Devonian Period."
Time you saw this!
The oldest chondrichthyan from the Early Devonian period. Nature, 425, pp.
Ichnology of the Devonian (Emsian) Campbellton Formation, New Brunswick, Canada
The bones came from tropical Greenland of the Devonian Period. Aquatic vertebrates were developing four limbs, which would serve tetrapods well when vertebrates eventually conquered land.
X-rays identify preteen tetrapods: improved technique picks out juveniles in ancient mass burial
The basement rocks (Franklinian), as in most of northern Alaska, are composed of meta-sedimentary rocks dating to the Devonian period. They have little to no petroleum potential.
Chukchi shelf stratigraphy: core study reveals pre-Cenozoic bedrock
The UK shales were formed in the carboniferous period over 300 million years ago, while those in the US were formed over 400 million years ago in the Devonian period.
Shale reserves 'could hold 15 years supply' Fracking is set to get under way but one of the country's leading shale gas experts says the UK reserves may not be as large as the Government hopes. PETER McCUSKER reports

Dictionary browser ?
Full browser ?