Cambrian explosion - Wikipedia
The Cambrian explosion (also known as Cambrian radiation[1] or Cambrian diversification) is an interval of time beginning approximately 538.8 million years ago in the Cambrian period of the early Paleozoic, when a sudden radiation of complex life occurred and practically all major animal phyla started appearing in the fossil record. [2][3][4] It...
The two phases of the Cambrian Explosion - PMC - PubMed …
We therefore propose two phases of the Cambrian Explosion separated by the Sinsk extinction event, the first dominated by stem groups of phyla from the late Ediacaran, ~542 Ma, to early Cambrian stage 4, ~513 Ma, and the second marked by radiating bilaterian crown group species of phyla from ~513 Ma and extending to the Ordovician Radiation.
Ediacaran Extinction and Cambrian Explosion - ScienceDirect
Sep 1, 2018 · We provide evidence for a two-phased biotic turnover event during the Ediacaran–Cambrian transition (about 550–539 Ma), which both comprises the Earth’s first major biotic crisis of macroscopic eukaryotic life (the disappearance of the enigmatic ‘Ediacara biota’) and immediately precedes the Cambrian explosion.
What Sparked the Cambrian Explosion? | Scientific American
Feb 16, 2016 · What Sparked the Cambrian Explosion? An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally...
What sparked the Cambrian explosion? - Nature
Feb 16, 2016 · Within several million years, this simple ecosystem would disappear, and give way to a world ruled by highly mobile animals that sported modern anatomical features. The Cambrian explosion, as...
Causes and consequences of end-Ediacaran extinction: An update
The last 10 years have seen an abundance of work on putative late Ediacaran extinction events, focusing on the possible causes and consequences of extinction pulses, as well as to what extent extinction may be linked to the Cambrian explosion.
The two phases of the Cambrian Explosion | Scientific Reports
Nov 9, 2018 · We therefore propose two phases of the Cambrian Explosion separated by the Sinsk extinction event, the first dominated by stem groups of phyla from the late Ediacaran, ~542 Ma, to early...
The Cambrian explosion: Current Biology - Cell Press
Oct 5, 2015 · This Cambrian world has become familiar through reconstructions of sea floor communities fossilized in the middle Cambrian Burgess Shale of Canada and the early Cambrian Chengjiang localities in China.
Ediacaran Extinction and Cambrian Explosion - Cell Press
Jul 15, 2018 · After nearly 30 million years (my) as the dominant components of benthic marine ecosystems, the Ediacara biota disappeared in the first major biotic transition of complex life, succeeded by a spectacular biotic radiation – the ‘Cambrian Explosion’ – which marks the appearance of a majority of extant animal clades and the establishment of metazoa...
Here, we describe competing models for late Ediacaran extinction, summarize evidence for these models, and outline key questions which will. macroscopic eukaryotic life (the disap-pearance of the enigmatic ‘Ediacara biota ’) and immediately precedes the Cambrian explosion.