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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Signor–Lipps_effect> ?p ?o }

• Signor–Lipps_effect abstract "The Signor–Lipps effect is a paleontological principle proposed by Philip W. Signor and Jere H. Lipps which states that, since the fossil record of organisms is never complete, neither the first nor the last organism in a given taxon will be recorded as a fossil. The Signor–Lipps effect is often applied specifically to cases of the youngest known fossils of a taxon failing to represent the last appearance of an organism. The inverse, regarding the oldest known fossils failing to represent the first appearance of a taxon, is alternatively called the Jaanusson effect after researcher Valdar Jaanusson, or the Sppil–Rongis effect (Signor–Lipps spelled backwards).One famous example is the coelacanth, which was thought to have become extinct in the very late Cretaceous – until a live specimen was caught in 1938. The animals known as \"Burgess Shale type fauna\" are best known from rocks of the Early and Middle Cambrian periods. Since 2006, though, a few fossils of similar animals have been found in rocks from the Ordovician, Silurian, and Early Devonian periods, in other words up to 100 million years after the Burgess Shale. The particular way in which such animals have been fossilized may depend on types of ocean chemistry that were present for limited periods of time.But the Signor–Lipps effect is more important for the difficulties it raises in paleontology:It makes it very difficult to be confident about the timing and speed of mass extinctions, and this makes it difficult to test theories about the causes of mass extinctions. For example, the extinction of the dinosaurs was long thought to be a gradual process, but evidence collected since the late 1980s suggests it was abrupt, which is consistent with the idea that an asteroid impact caused it.The uncertainty about when a taxon first appeared makes it difficult to be confident about the ancestry of specific genera. For example, if the earliest known fossil of genus X is much earlier than the earliest known fossil of genus Y and genus Y has all the features of genus X plus a few of its own, it is natural to suppose that X is an ancestor of Y. But this hypothesis could be called into question at any time by the finding of a fossil of Y that is earlier than any known fossil of X – unless an even older fossil of genus X is found, and so on.↑ ↑ ↑ ↑ ↑ ↑".
• Signor–Lipps_effect thumbnail Signor-lipps.svg?width=300.
• Signor–Lipps_effect wikiPageExternalLink 000301.html.
• Signor–Lipps_effect wikiPageExternalLink indexs.shtml.
• Signor–Lipps_effect wikiPageExternalLink Hominids.html.
• Signor–Lipps_effect wikiPageExternalLink swang1.
• Signor–Lipps_effect wikiPageID "4373065".
• Signor–Lipps_effect wikiPageLength "5402".
• Signor–Lipps_effect wikiPageOutDegree "23".
• Signor–Lipps_effect wikiPageRevisionID "691439055".
• Signor–Lipps_effect wikiPageWikiLink Burgess_Shale_type_fauna.
• Signor–Lipps_effect wikiPageWikiLink Burgess_Shale_type_preservation.
• Signor–Lipps_effect wikiPageWikiLink Cambrian.
• Signor–Lipps_effect wikiPageWikiLink Category:Extinction.
• Signor–Lipps_effect wikiPageWikiLink Category:Fossil_record.
• Signor–Lipps_effect wikiPageWikiLink Category:Paleontological_concepts_and_hypotheses.
• Signor–Lipps_effect wikiPageWikiLink Chicxulub_crater.
• Signor–Lipps_effect wikiPageWikiLink Coelacanth.
• Signor–Lipps_effect wikiPageWikiLink Cretaceous.
• Signor–Lipps_effect wikiPageWikiLink Devonian.
• Signor–Lipps_effect wikiPageWikiLink Dinosaur.
• Signor–Lipps_effect wikiPageWikiLink Extinction_event.
• Signor–Lipps_effect wikiPageWikiLink Fossil.
• Signor–Lipps_effect wikiPageWikiLink Genus.
• Signor–Lipps_effect wikiPageWikiLink Jere_H._Lipps.
• Signor–Lipps_effect wikiPageWikiLink Lazarus_taxon.
• Signor–Lipps_effect wikiPageWikiLink Ordovician.
• Signor–Lipps_effect wikiPageWikiLink Paleontology.
• Signor–Lipps_effect wikiPageWikiLink Philip_W._Signor.
• Signor–Lipps_effect wikiPageWikiLink Silurian.
• Signor–Lipps_effect wikiPageWikiLink Taxon.
• Signor–Lipps_effect wikiPageWikiLink File:Fossil_record_gaps_-_delicate_and_soft-bodied_animals.svg.
• Signor–Lipps_effect wikiPageWikiLink File:Signor-lipps.svg.
• Signor–Lipps_effect wikiPageWikiLinkText "Signor–Lipps effect".
• Signor–Lipps_effect wikiPageWikiLinkText "considerably earlier".
• Signor–Lipps_effect wikiPageWikiLinkText "sparse data".
• Signor–Lipps_effect wikiPageUsesTemplate Template:Paleontology.
• Signor–Lipps_effect wikiPageUsesTemplate Template:Reflist.
• Signor–Lipps_effect subject Category:Extinction.
• Signor–Lipps_effect subject Category:Fossil_record.
• Signor–Lipps_effect subject Category:Paleontological_concepts_and_hypotheses.
• Signor–Lipps_effect hypernym Principle.
• Signor–Lipps_effect type Agent.
• Signor–Lipps_effect type Redirect.
• Signor–Lipps_effect type Subfield.
• Signor–Lipps_effect comment "The Signor–Lipps effect is a paleontological principle proposed by Philip W. Signor and Jere H. Lipps which states that, since the fossil record of organisms is never complete, neither the first nor the last organism in a given taxon will be recorded as a fossil. The Signor–Lipps effect is often applied specifically to cases of the youngest known fossils of a taxon failing to represent the last appearance of an organism.".
• Signor–Lipps_effect label "Signor–Lipps effect".
• Signor–Lipps_effect sameAs Q1184242.
• Signor–Lipps_effect sameAs Signor-Lipps-effek.
• Signor–Lipps_effect sameAs Efecte_Signor-Lipps.
• Signor–Lipps_effect sameAs Signorův-Lippsův_jev.
• Signor–Lipps_effect sameAs Efecto_Signor–Lipps.
• Signor–Lipps_effect sameAs Signori-Lippsi_efekt.
• Signor–Lipps_effect sameAs Signor-Lipps_efektua.
• Signor–Lipps_effect sameAs Signor–Lipps_hatás.
• Signor–Lipps_effect sameAs Signor-Lippseffect.
• Signor–Lipps_effect sameAs Efekt_Signora-Lippsa.
• Signor–Lipps_effect sameAs Efeito_Signor-Lipps.
• Signor–Lipps_effect sameAs m.0bztp2.
• Signor–Lipps_effect sameAs Эффект_Синьора-Липпса.
• Signor–Lipps_effect sameAs Ефект_Сіньора-Ліппса.
• Signor–Lipps_effect sameAs Q1184242.
• Signor–Lipps_effect wasDerivedFrom Signor–Lipps_effect?oldid=691439055.
• Signor–Lipps_effect depiction Signor-lipps.svg.
• Signor–Lipps_effect isPrimaryTopicOf Signor–Lipps_effect.