Proposed evolutionary event in the history of metazoa, producing the Ediacaran biota
Dickinsonia, an enigmatic quilted organism with glide symmetry which may have been an early animalCloudina may have been one of the first mineralized animals to appear.[1]Kimberella was originally interpreted as a cubozoan cnidarian, although it is now believed it was an early mollusc.[2]The Ediacaran trace fossils are a sign of animal movement as well as sediment disturbance, they show possible signs of the earliest true animals.
The Avalon explosion, named from the Precambrian faunal trace fossils discovered on the Avalon Peninsula in Newfoundland, eastern Canada, is a proposed evolutionary radiation of prehistoric animals about 575 million years ago in the Ediacaran period, with the Avalon explosion being one of three eras grouped in this time period.[3] This evolutionary event is believed to have occurred some 33 million years earlier than the Cambrian explosion, which had been long thought to be when complex life started on Earth.
Scientists are still unsure of the full extent behind the development of the Avalon explosion,[3] which resulted in a rapid increase in metazoan biodiversity, including the first appearance of some extant infrakingdoms/superphyla such as cnidarians and bilaterians. Many of the Avalon explosion animals are sessile soft-bodied organisms living in deep marine environments,[4] and the first stages of the Avalon explosion were observed through comparatively minimal species.[3]
^Porter, S.M. (1 June 2007). "Seawater Chemistry and Early Carbonate Biomineralization". Science. 316 (5829): 1302. Bibcode:2007Sci...316.1302P. doi:10.1126/science.1137284. PMID 17540895. S2CID 27418253.
^Wade, M. (1972). "Hydrozoa and Scyphozoa and other medusoids from the Precambrian Ediacara fauna, South Australia" (PDF). Palaeontology. 15: 197–225. Archived from the original (PDF) on 9 April 2011.
^ abcCite error: The named reference Shen2007 was invoked but never defined (see the help page).
^Cite error: The named reference :0 was invoked but never defined (see the help page).
The Avalonexplosion, named from the Precambrian faunal trace fossils discovered on the Avalon Peninsula in Newfoundland, eastern Canada, is a proposed...
town's fort, where they soon surrendered. Avalonexplosion British colonization of the Americas New Cambriol "Avalon Peninsula". The Canadian Encyclopedia...
have undergone evolutionary radiation in a proposed event called the Avalonexplosion, 575 million years ago. This was after the Earth had thawed from the...
plants) originated and rapidly diversified during the Cretaceous period. Avalonexplosion This included at least animals, phytoplankton and calcimicrobes. At...
The relatively sudden evolutionary radiation event, known as the AvalonExplosion, is represented by now-extinct, relatively simple soft-bodied animal...
trace fossils of booming complex life from the Ediacaran period (Avalonexplosion) of the preceding Proterozoic eon have since been discovered, and the...
Dong, Lin; Xiao, Shuhai; Kowalewski, Michal (4 January 2008). "The Avalonexplosion: evolution of Ediacara morphospace". Science. 319 (5859): 81–84. Bibcode:2008Sci...
the Mistaken Point assemblage has been called the 'Ediacaran Explosion' or 'AvalonExplosion' Earth sciences portal Canada portal Paleontology portal List...
large, complex life later in the Ediacaran AvalonExplosion and the subsequent Phanerozoic Cambrian Explosion. Nonetheless, prokaryotic cyanobacteria were...
contributor to large-scale evolutionary phenomena, such as the Avalonexplosion, the Cambrian explosion, trends in animal body size, and other diversification...
Dong, Lin; Xiao, Shuhai; Kowalewski, Michal (4 January 2008). "The Avalonexplosion: evolution of Ediacara morphospace". Science. 319 (5859): 81–84. Bibcode:2008Sci...
whales, and horses. Other familiar radiations include the AvalonExplosion, the Cambrian Explosion, the Great Ordovician Biodiversification Event, the...
Dong, Lin; Xiao, Shuhai; Kowalewski, Michal (4 January 2008). "The Avalonexplosion: evolution of Ediacara morphospace". Science. 319 (5859): 81–84. Bibcode:2008Sci...
widespread tens of millions of years before the Cambrian Explosion in what is known as the AvalonExplosion. Nonetheless, the upper boundary of the Proterozoic...
geological period and the more familiar fauna of the Late Ediacaran Avalonexplosion, as well as due to its microfossils' potential utility as biostratigraphical...
macroscopic organisms in what was called the Avalonexplosion, 37 million years before the Cambrian explosion. These same organisms – frondomorphs and medusoids...
ocean as global oxygen levels rose. Great Oxidation Event Avalonexplosion Cambrian explosion Och, Lawrence M.; Shields-Zhou, Graham A. (January 2012)...
The Avalon Ballroom was a music venue in the Polk Gulch neighborhood of San Francisco, California, at 1244 Sutter Street (or 1268 Sutter, depending on...
themselves secret from the public. Beginning with the three-part episode "Avalon" and continuing for much of the rest of the season, episodes focus on a...
by Brigitte Bako) The daughter of Goliath and Demona. She was raised on Avalon like a human, thus making her more willing to trust others, and joined the...
Simunovic [de], Vadim Glowna Crime a.k.a. Endstation Tanke The Mists of Avalon Uli Edel Anjelica Huston, Julianna Margulies, Joan Allen Fantasy American-German...
Land of New Hope, from a new metal opera project by Timo Tolkki called Avalon, in which she is the main character. The album was released on May 17, 2013...
Global Information
