Emsian stage

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• Emsian Stage — ▪ geology       uppermost of the three standard worldwide divisions of Early Devonian (Devonian Period) rocks and time. Emsian time spans the interval between 407 million and 397.5 million years ago. The Emsian Stage was named for exposures… …   Universalium

• Eifelian Stage — ▪ geology       lowermost of the two standard worldwide divisions of Middle Devonian (Devonian Period) rocks and time. Eifelian time spans the interval between 397.5 million and 391.8 million years ago. The name of the Eifelian Stage is derived… …   Universalium

• Pragian Stage — ▪ geology       second of the three standard worldwide divisions of Early Devonian (Devonian Period) rocks and time. Pragian time spans the interval between 411.2 million and 407 million years ago. The name is derived from Prague, the capital of… …   Universalium

• Oxfordian (stage) — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith …   Wikipedia

• Devonian Period — Interval of geologic time from 417 to 354 million years ago; it was the fourth period of the Paleozoic Era. During the Devonian, a giant continent was situated in the Southern Hemisphere (see Gondwana), and other landmasses were located in the… …   Universalium

• Emsium — System Serie Stufe ≈ Alter (mya) höher höher höher jünger Devon Oberdevon Famennium 374,5–359 …   Deutsch Wikipedia

• New Zealand geologic time scale — While also using the international Geologic time scale, many nations especially those with isolated and therefore non standard prehistories use their own system of dividing geologic time into epochs and faunal stages. In New Zealand, these epochs …   Wikipedia

• Bactritida — Taxobox name = Bactritida regnum = Animalia phylum = Mollusca classis = Cephalopoda subclassis = Bactritoidea ordo = Bactritida ordo authority = Shimanskiy 1951 The Bactritida form a small order of more or less straight shelled (orthoconic)… …   Wikipedia

• Pragium — System Serie Stufe ≈ Alter (mya) höher höher höher jünger Devon Oberdevon Famennium 374,5–359 …   Deutsch Wikipedia

• Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies …   Wikipedia

• Devonian — For the Celtic language, see Southwestern Brythonic language; for the residents of the English county, see Devon. Devonian Period 416–359.2 million years ago …   Wikipedia