Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Ediacaran_biota> ?p ?o }
- Ediacaran_biota abstract "The Ediacaran (/ˌiːdiˈækərən/; formerly Vendian) biota consisted of enigmatic tubular and frond-shaped, mostly sessile organisms that lived during the Ediacaran Period (ca. 635–542 Ma). Trace fossils of these organisms have been found worldwide, and represent the earliest known complex multicellular organisms. The Ediacaran biota radiated in an event called the Avalon explosion, 575 million years ago, after the Earth had thawed from the Cryogenian period's extensive glaciation. The biota largely disappeared with the rapid increase in biodiversity known as the Cambrian explosion. Most of the currently existing body plans of animals first appeared in the fossil record of the Cambrian rather than the Ediacaran. For macroorganisms, the Cambrian biota appears to have completely replaced the organisms that populated the Ediacaran fossil record, although relationships are still a matter of debate.The organisms of the Ediacaran Period first appeared around 600 million years ago and flourished until the cusp of the Cambrian 542 million years ago, when the characteristic communities of fossils vanished. The earliest reasonably diverse Ediacaran community was discovered in 1995 in Sonora, Mexico, and is approximately 600 million years in age, pre-dating the Gaskiers glaciation of about 580 million years ago. While rare fossils that may represent survivors have been found as late as the Middle Cambrian (510 to 500 million years ago), the earlier fossil communities disappear from the record at the end of the Ediacaran leaving only curious fragments of once-thriving ecosystems. Multiple hypotheses exist to explain the disappearance of this biota, including preservation bias, a changing environment, the advent of predators and competition from other life-forms.Determining where Ediacaran organisms fit in the tree of life has proven challenging; it is not even established that they were animals, with suggestions that they were lichens (fungus-alga symbionts), algae, protists known as foraminifera, fungi or microbial colonies, or hypothetical intermediates between plants and animals. The morphology and habit of some taxa (e.g. Funisia dorothea) suggest relationships to Porifera or Cnidaria. Kimberella may show a similarity to molluscs, and other organisms have been thought to possess bilateral symmetry, although this is controversial. Most macroscopic fossils are morphologically distinct from later life-forms: they resemble discs, tubes, mud-filled bags or quilted mattresses. Due to the difficulty of deducing evolutionary relationships among these organisms, some palaeontologists have suggested that these represent completely extinct lineages that do not resemble any living organism. One palaeontologist proposed a separate kingdom level category Vendozoa (now renamed Vendobionta) in the Linnaean hierarchy for the Ediacaran biota. If these enigmatic organisms left no descendants, their strange forms might be seen as a \"failed experiment\" in multicellular life, with later multicellular life evolving independently from unrelated single-celled organisms.Breandán MacGabhann argues that the concept of \"Ediacara Biota\" is artificial and arbitrary as it can not be defined geographically, stratigraphically, taphonomically nor biologically. He points out that 8 particular fossils or groups of fossils considered \"Ediacaran\" have 5 taphonomic modes (preservation styles), occur in 3 geological periods, and have no phylogenetic meaning as a whole.".
- Ediacaran_biota thumbnail DickinsoniaCostata.jpg?width=300.
- Ediacaran_biota wikiPageExternalLink drook.
- Ediacaran_biota wikiPageExternalLink ediac.html.
- Ediacaran_biota wikiPageExternalLink s3817544.htm.
- Ediacaran_biota wikiPageExternalLink 4862432.
- Ediacaran_biota wikiPageExternalLink database.
- Ediacaran_biota wikiPageExternalLink Ediacara.html.
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- Ediacaran_biota wikiPageRevisionID "707037592".
- Ediacaran_biota wikiPageWikiLink ABC_News_(Australia).
- Ediacaran_biota wikiPageWikiLink Abiogenesis.
- Ediacaran_biota wikiPageWikiLink Abyssal_plain.
- Ediacaran_biota wikiPageWikiLink Acritarch.
- Ediacaran_biota wikiPageWikiLink Adaptive_radiation.
- Ediacaran_biota wikiPageWikiLink Adolf_Seilacher.
- Ediacaran_biota wikiPageWikiLink Alexander_Murray_(geologist).
- Ediacaran_biota wikiPageWikiLink Algae.
- Ediacaran_biota wikiPageWikiLink Animal.
- Ediacaran_biota wikiPageWikiLink Annelid.
- Ediacaran_biota wikiPageWikiLink Antarctica.
- Ediacaran_biota wikiPageWikiLink Archaeonassa.
- Ediacaran_biota wikiPageWikiLink Arthropod.
- Ediacaran_biota wikiPageWikiLink Aspidella.
- Ediacaran_biota wikiPageWikiLink Atmosphere.
- Ediacaran_biota wikiPageWikiLink Avalon_explosion.
- Ediacaran_biota wikiPageWikiLink Bacteria.
- Ediacaran_biota wikiPageWikiLink Banded_iron_formation.
- Ediacaran_biota wikiPageWikiLink Bilateria.
- Ediacaran_biota wikiPageWikiLink Biodiversity.
- Ediacaran_biota wikiPageWikiLink Biomineralization.
- Ediacaran_biota wikiPageWikiLink Biota_(taxonomy).
- Ediacaran_biota wikiPageWikiLink Bivalvia.
- Ediacaran_biota wikiPageWikiLink Body_plan.
- Ediacaran_biota wikiPageWikiLink Brachiopod.
- Ediacaran_biota wikiPageWikiLink Brain.
- Ediacaran_biota wikiPageWikiLink British_Geological_Survey.
- Ediacaran_biota wikiPageWikiLink Burgess_Shale.
- Ediacaran_biota wikiPageWikiLink Cambrian.
- Ediacaran_biota wikiPageWikiLink Cambrian_Series_3.
- Ediacaran_biota wikiPageWikiLink Cambrian_explosion.
- Ediacaran_biota wikiPageWikiLink Carboniferous.
- Ediacaran_biota wikiPageWikiLink Category:Ediacaran.
- Ediacaran_biota wikiPageWikiLink Category:Ediacaran_biota.
- Ediacaran_biota wikiPageWikiLink Category:Proterozoic_life.
- Ediacaran_biota wikiPageWikiLink Charnia.
- Ediacaran_biota wikiPageWikiLink Charniodiscus.
- Ediacaran_biota wikiPageWikiLink Charnwood_Forest.
- Ediacaran_biota wikiPageWikiLink Chemotroph.
- Ediacaran_biota wikiPageWikiLink Chitin.
- Ediacaran_biota wikiPageWikiLink Cilium.
- Ediacaran_biota wikiPageWikiLink Circulatory_system.
- Ediacaran_biota wikiPageWikiLink Clade.
- Ediacaran_biota wikiPageWikiLink Cloudinidae.
- Ediacaran_biota wikiPageWikiLink Cnidaria.
- Ediacaran_biota wikiPageWikiLink Cnidocyte.
- Ediacaran_biota wikiPageWikiLink Community_(ecology).
- Ediacaran_biota wikiPageWikiLink Concretion.
- Ediacaran_biota wikiPageWikiLink Continental_drift.
- Ediacaran_biota wikiPageWikiLink Crown_group.
- Ediacaran_biota wikiPageWikiLink Cryogenian.
- Ediacaran_biota wikiPageWikiLink Cyclomedusa.
- Ediacaran_biota wikiPageWikiLink Dendrogramma.
- Ediacaran_biota wikiPageWikiLink Deposition_(geology).
- Ediacaran_biota wikiPageWikiLink Derek_Briggs.
- Ediacaran_biota wikiPageWikiLink Dickinsonia.
- Ediacaran_biota wikiPageWikiLink Distributary.
- Ediacaran_biota wikiPageWikiLink Donald_Canfield.
- Ediacaran_biota wikiPageWikiLink Doushantuo_Formation.
- Ediacaran_biota wikiPageWikiLink Ecosystem.
- Ediacaran_biota wikiPageWikiLink Ediacara_Hills.
- Ediacaran_biota wikiPageWikiLink Ediacaran.
- Ediacaran_biota wikiPageWikiLink Ediacaran_biota.
- Ediacaran_biota wikiPageWikiLink Ediacaria.
- Ediacaran_biota wikiPageWikiLink Elkanah_Billings.
- Ediacaran_biota wikiPageWikiLink Embryo.
- Ediacaran_biota wikiPageWikiLink Epibaion.
- Ediacaran_biota wikiPageWikiLink Erniettomorph.
- Ediacaran_biota wikiPageWikiLink Eumetazoa.
- Ediacaran_biota wikiPageWikiLink Evolution_of_biological_complexity.
- Ediacaran_biota wikiPageWikiLink Evolutionary_radiation.
- Ediacaran_biota wikiPageWikiLink Facies.
- Ediacaran_biota wikiPageWikiLink File:Doushantou_Embryo_Yinetal2007.jpg.
- Ediacaran_biota wikiPageWikiLink Filter_feeder.
- Ediacaran_biota wikiPageWikiLink Flinders_Ranges.
- Ediacaran_biota wikiPageWikiLink Foraminifera.
- Ediacaran_biota wikiPageWikiLink Fossil.
- Ediacaran_biota wikiPageWikiLink Fossil_trackway.
- Ediacaran_biota wikiPageWikiLink Fractal.
- Ediacaran_biota wikiPageWikiLink Frond.
- Ediacaran_biota wikiPageWikiLink Fumarole.
- Ediacaran_biota wikiPageWikiLink Fungus.
- Ediacaran_biota wikiPageWikiLink Funisia.
- Ediacaran_biota wikiPageWikiLink Gaskiers_glaciation_(geology).
- Ediacaran_biota wikiPageWikiLink Geologic_map.
- Ediacaran_biota wikiPageWikiLink Geologic_time_scale.
- Ediacaran_biota wikiPageWikiLink Geological_formation.
- Ediacaran_biota wikiPageWikiLink Georg_Gürich.