- Furongian
The Furongian (which represented approximately the old notions of Late Cambrian, Merioneth, Croixian, or Potsdamian) is the third and final geological epoch of the
Cambrian Period. It spans the time between 501 ± 2 Ma and 488.3 ± 1.7 Ma (million years ago). It has been proposed to divided it three ICS stages, of which only the first (Paibian ) is actually defined. Rocks of the Late Cambrian epoch are referred to as Upper Cambrian strata. During the Furongian, trilobites proliferated; they serve as usefulindex fossil s. Mollusks also became more diverse and new groups such as thegraptolite s and theconodont s, probable early chordates, also appeared during the Furongian epoch.References
* [http://www.stratigraphy.org/geowhen/stages/Late_Cambrian.html GeoWhen Database - Late Cambrian]
See also
*
Cambrian-Ordovician extinction
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См. также в других словарях:
Furongian — 1. adjective Of a geologic epoch within the Cambrian period from about 501 to 488 million years ago; marked by an explosion of life. 2. noun The Furongian epoch … Wiktionary
Cambrian — For other uses, see Cambrian (disambiguation). Cambrian Period 542–488.3 million years ago … Wikipedia
Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… … Wikipedia
Chippewaella — Temporal range: 501–488 Ma … Wikipedia
Paibian — In the geologic timescale, the Paibian is the age of the Furongian epoch of the Cambrian period of the Paleozoic era of the Phanerozoic eon that is comprehended between 501.0 ± 2.0 Ma and approximately 496.0 Ma (million years ago), approximately … Wikipedia
Furongium — System Serie Stufe ≈ Alter (mya) höher höher höher jünger Kambrium Furongium 10. Stufe 492–488,3 … Deutsch Wikipedia
Paibium — System Serie Stufe ≈ Alter (mya) höher höher höher jünger Kambrium Furongium 10. Stufe 492–488,3 … Deutsch Wikipedia
Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies … Wikipedia
Carboniferous — For the album by Zu see Carboniferous (album). Carboniferous Period 359.2–299 million years ago … Wikipedia
Cretaceous — Period 145.5–65.5 million years ago … Wikipedia
