Look up: Devonian

1. 
   Devonian
   The Devonian was the sixth geological period, 300,000,000 years ago. It marked the evolution of the insects and amphibians.
   Found on http://www.encyclo.co.uk/nol.php
   
   
2. 
   Devonian
   The fourth period of the Palaeozoic. Spans 409-353Ma. The rocks of this period are referred to as Old Red Sandstone (ORS) as they are often red coloured sandstone. The name originates from the county of Devon in South West England. The colonisation of land was also well under way as shown by the famous Rynie Chert deposit.
   Epochs:
   Late Devonian 371-353Ma
   Middle Devonian 380-371Ma
   Early Devonian 409-380Ma
   Found on http://www.geologyrocks.co.uk/glossary/l
   
   
3. 
   Devonian
   [n] - from 345 million to 405 million years ago
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. 
   Devonian
   the period of geological time between 410 and 360 million years ago. The name comes from the strata in Devon, S.W. England, which define this part of geological history. The Devonian is also known as the Old Red Sandstone (often referred to as O.R.S.) because the characteristic colour of the rocks is red. The red colour is because of a high iron content in the rock, and tells us that the climate was hot and dry when they were deposited. See Geological Timescale
   Found on http://www.sedgwickmuseum.org/education/
   
   
5. 
   Devonian
   a geological strata/period depicted between 354 million and 417 million years before present;
   Found on http://www.maxpetroleum.com/GLOSSARY.asp
   
   
6. 
   Devonian
   De·vo'ni·an adjective (Geol.) Of or pertaining to Devon or Devonshire in England; as, the Devonian rocks, period, or system. Devonian age (Geol.) , the age next older than the Carboniferous and later than the Silurian; -- called also the Age of fishes . The various strata of this age compose the Devonian formation or system , and include the ol ...
   Found on http://www.encyclo.co.uk/webster/D/54
   
   
7. 
   Devonian
   De·vo'ni·an noun The Devonian age or formation.
   Found on http://www.encyclo.co.uk/webster/D/54
   
   
8. 
   devonian
   <geology> Of or pertaining to Devon or Devonshire in England; as, the Devonian rocks, period, or system. ... <geology> Devonian age, the age next older than the Carboniferous and later than the Silurian; called also the Age of fishes. The various strata of this age compose the Devonian formation or system, and include the old red sandsto ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
9. 
   Devonian
   Devonian period noun from 405 million to 345 million years ago; dominance of fishes and appearance of amphibians and ammonites
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    Devonian
    The `Devonian` is a geologic period of the Paleozoic era spanning from . It is named after Devon, England, where Exmoor rocks from this period were first studied. During the Devonian Period, which occurred in the Paleozoic era, the first fish evolved legsand started to walk on land as tetrapods around 365 Ma, and the first insects and spiders also started to colonize terrestrial habitats. The first seed-bearing plants spread across dry land, fo...
    Found on http://en.wikipedia.org/wiki/Devonian
    
    
11. 
    Devonian
    • (a.) Of or pertaining to Devon or Devonshire in England; as, the Devonian rocks, period, or system. • (n.) The Devonian age or formation.
    Found on http://thinkexist.com/dictionary/meaning
    
    
12. 
    Devonian
    Geologic period that occurred roughly 360 to 408 million years ago. During this period, the first amphibians and trees appear.
    Found on http://www.physicalgeography.net/physgeo
    
    
13. 
    Devonian
    A period of the Paleozoic era, spanning the time between 410 and 360 million years ago. It is named after Devonshire, England, where rocks of this age were first studied.
    Found on http://geology.er.usgs.gov/paleo/glossar