Devonian


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

De·vo·ni·an

 (dĭ-vō′nē-ən)
adj.
Of, relating to, or being the period of geologic time from about 416 to 359 million years ago, the fourth period of the Paleozoic Era. The Devonian Period is characterized by the development of lobe-finned fishes, the appearance of amphibians and insects, and the first forests. See Table at geologic time.
n.
The Devonian Period.

[After Devon, a county of southwest England.]

Devonian

(dəˈvəʊnɪən)
adj
1. (Geological Science) of, denoting, or formed in the fourth period of the Palaeozoic era, between the Silurian and Carboniferous periods, lasting 60-70 million years during which amphibians first appeared
2. (Placename) of or relating to Devon
n
(Geological Science) the Devonian the Devonian period or rock system

De•vo•ni•an

(dəˈvoʊ ni ən)

adj.
1. noting or pertaining to a period of the Paleozoic Era, 405 million to 345 million years ago, characterized by the dominance of fishes and the advent of amphibians and ammonites.
2. of or pertaining to Devonshire, England.
n.
3. the Devonian Period or System.
[1605–15; < Medieval Latin Devoni(a) Devon + -an1]

De·vo·ni·an

(dĭ-vō′nē-ən)
The fourth period of the Paleozoic Era, from about 408 to 360 million years ago, characterized by the appearance of forests, amphibians, and insects. See Chart at geologic time.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Devonian - from 405 million to 345 million years agoDevonian - from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites
Paleozoic, Paleozoic era - from 544 million to about 230 million years ago
Translations
devon

Devonian

[deˈvəʊnɪən] ADJ (Geol) → devónico
References in classic literature ?
The main points of interest consist, first in some highly fossiliferous strata, belonging to the Devonian or Carboniferous period; secondly, in proofs of a late small rise of the land; and lastly, in a solitary and superficial patch of yellowish limestone or travertin, which contains numerous impressions of leaves of trees, together with land-shells, not now existing.
I need give only one instance, namely, the manner in which the fossils of the Devonian system, when this system was first discovered, were at once recognised by palaeontologists as intermediate in character between those of the overlying carboniferous, and underlying Silurian system.
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.
A) part i - delivery of the devonian dolomite fraction of 4 -31.
Iranian Late Devonian trilobites are presently best documented from Central Iran.
Botanical pharmaceutical specialist Devonian Health Group Inc (TSXv: GSD) has been awarded a US patent for its Purgenesis anti-ageing treatment, the company revealed on Wednesday.
The discovery of two Devonian tetrapods in South Africa suggests that the evolution of these creatures from water to land could have occurred anywhere else, and not only in the tropics as was previously thought, a study has established.
Peter Sandstone, the Utica Shale and related Collingwood Member, the Burnt Bluff Group, Silurian reefs in the Michigan Basin, Ray Reef, hydrocarbon source rocks, the Middle Devonian Sylvania Sandstone, the Devonian of South Buckeye field, the Marshall Formation, Mississippian and Pennsylvania strata, and Pennsylvanian red beds.
Up to this point, most Keystone project drilling was considered to be "scout drilling" largely conducted to obtain 1) critical information related to host rock characteristics; 2) locations of specific host horizons within the approximately 3000-foot-thick prospective host rock package comprised of Devonian Horse Canyon and Wenban and Devonian-Silurian Roberts Mountains Formations; 3) gold deposit model characteristics; as well as to provide a sense of lateral extent of the hydrothermal gold system.
2007), with rarer descriptions of late Silurian to Early Devonian acanthodians (Spjeldnaes 1967; Vieth 1980; Burrow et al.
Abundant oil-gas seepages in the Guizhong Depression including 31 oil-gas seepages and 57 bitumen displays (32 of Devonian, 35 of Carboniferous, 15 of Permian, and 6 of Triassic) have been found previously [25].