Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Ediacara_biota> ?p ?o. }
Showing items 1 to 56 of
56
with 100 items per page.
- Ediacara_biota abstract "The Ediacara (/ˌiːdiˈækərə/; formerly Vendian) biota consisted of enigmatic tubular and frond-shaped, mostly sessile organisms which 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 Ediacara 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 contemporaneously with the rapid appearance of biodiversity known as the Cambrian explosion. Most of the currently existing body plans of animals first appeared only in the fossil record of the Cambrian rather than the Ediacaran. For macroorganisms, the Cambrian biota completely replaced the organisms that populated the Ediacaran fossil record.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 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, to 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 paleontologists have suggested that these represent completely extinct lineages that do not resemble any living organism. One paleontologist 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 presents the case that the designation/concept "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.".
- Ediacara_biota thumbnail DickinsoniaCostata.jpg?width=300.
- Ediacara_biota wikiPageExternalLink drook.
- Ediacara_biota wikiPageExternalLink ediac.html.
- Ediacara_biota wikiPageExternalLink s3817544.htm.
- Ediacara_biota wikiPageExternalLink 4862432.
- Ediacara_biota wikiPageExternalLink database.
- Ediacara_biota wikiPageExternalLink Ediacara.html.
- Ediacara_biota wikiPageID "10608031".
- Ediacara_biota wikiPageRevisionID "603525315".
- Ediacara_biota hasPhotoCollection Ediacara_biota.
- Ediacara_biota subject Category:Ediacaran_biota.
- Ediacara_biota subject Category:Fossils.
- Ediacara_biota subject Category:Geology.
- Ediacara_biota subject Category:Paleontology.
- Ediacara_biota type Adult109605289.
- Ediacara_biota type CausalAgent100007347.
- Ediacara_biota type Dodo110022908.
- Ediacara_biota type Fossils.
- Ediacara_biota type LivingThing100004258.
- Ediacara_biota type Object100002684.
- Ediacara_biota type Oldster110376523.
- Ediacara_biota type Organism100004475.
- Ediacara_biota type Person100007846.
- Ediacara_biota type PhysicalEntity100001930.
- Ediacara_biota type Whole100003553.
- Ediacara_biota type YagoLegalActor.
- Ediacara_biota type YagoLegalActorGeo.
- Ediacara_biota comment "The Ediacara (/ˌiːdiˈækərə/; formerly Vendian) biota consisted of enigmatic tubular and frond-shaped, mostly sessile organisms which 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 Ediacara 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.".
- Ediacara_biota label "Biota del periodo Ediacárico".
- Ediacara_biota label "Biota ediacarana".
- Ediacara_biota label "Ediacara biota".
- Ediacara_biota label "Ediacara-Fauna".
- Ediacara_biota label "Ediacarische biota".
- Ediacara_biota label "Fauna di Ediacara".
- Ediacara_biota label "Fauna ediakarańska".
- Ediacara_biota label "Faune de l'Édiacarien".
- Ediacara_biota label "Эдиакарская биота".
- Ediacara_biota label "エディアカラ生物群".
- Ediacara_biota label "埃迪卡拉生物群".
- Ediacara_biota sameAs Ediacara-Fauna.
- Ediacara_biota sameAs Biota_del_periodo_Ediacárico.
- Ediacara_biota sameAs Faune_de_l'Édiacarien.
- Ediacara_biota sameAs Fauna_di_Ediacara.
- Ediacara_biota sameAs エディアカラ生物群.
- Ediacara_biota sameAs 에디아카라_생물군.
- Ediacara_biota sameAs Ediacarische_biota.
- Ediacara_biota sameAs Fauna_ediakarańska.
- Ediacara_biota sameAs Biota_ediacarana.
- Ediacara_biota sameAs m.0d0jq.
- Ediacara_biota sameAs Q723846.
- Ediacara_biota sameAs Q723846.
- Ediacara_biota sameAs Ediacara_biota.
- Ediacara_biota wasDerivedFrom Ediacara_biota?oldid=603525315.
- Ediacara_biota depiction DickinsoniaCostata.jpg.
- Ediacara_biota isPrimaryTopicOf Ediacara_biota.