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- Transitional_fossil abstract "A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. This is especially important where the descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group. These fossils serve as a reminder that taxonomic divisions are human constructs that have been imposed in hindsight on a continuum of variation. Because of the incompleteness of the fossil record, there is usually no way to know exactly how close a transitional fossil is to the point of divergence. Therefore, we can't assume transitional fossils are direct ancestors of more recent groups, though they are frequently used as models for such ancestors.In 1859, when Charles Darwin's On the Origin of Species was first published, the fossil record was poorly known. Darwin described the perceived lack of transitional fossils as, "...the most obvious and gravest objection which can be urged against my theory," but explained it by relating it to the extreme imperfection of the geological record. He noted the limited collections available at that time, but described the available information as showing patterns that followed from his theory of descent with modification through natural selection. Indeed, Archaeopteryx was discovered just two years later, in 1861, and represents a classic transitional form between dinosaurs and birds. Many more transitional fossils have been discovered since then, and there is now abundant evidence of how all classes of vertebrates are related, much of it in the form of transitional fossils. Specific examples include humans and other primates, tetrapods and fish, and birds and dinosaurs.The phrase missing link has been used extensively in popular writings on human evolution to refer to a perceived gap in the hominid evolutionary record. It is most commonly used to refer to any new transitional fossil finds. Scientists, however, do not use the term, as it refers to a pre-evolutionary view of nature.".
- Transitional_fossil thumbnail Spindle_diagram.jpg?width=300.
- Transitional_fossil wikiPageExternalLink v=onepage&q&f=false.
- Transitional_fossil wikiPageExternalLink v=onepage&q=fossil%20%22transitional%20form%22&f=false.
- Transitional_fossil wikiPageExternalLink v=onepage&q=fossil%20%22transitional%20form%22&f=false.
- Transitional_fossil wikiPageExternalLink v=onepage&q=fossil%20%22transitional%20form%22&f=false.
- Transitional_fossil wikiPageExternalLink Segment.aspx?irn=161.
- Transitional_fossil wikiPageExternalLink tiktaalik.uchicago.edu.
- Transitional_fossil wikiPageExternalLink Charles-Darwin.
- Transitional_fossil wikiPageExternalLink faq-transitional.html.
- Transitional_fossil wikiPageExternalLink avians.html.
- Transitional_fossil wikiPageID "331755".
- Transitional_fossil wikiPageRevisionID "600940251".
- Transitional_fossil align "left".
- Transitional_fossil caption "Reconstruction of Pakicetus".
- Transitional_fossil caption "Skeleton of Ambulocetus natans".
- Transitional_fossil direction "vertical".
- Transitional_fossil hasPhotoCollection Transitional_fossil.
- Transitional_fossil image "Ambulocetus natans.jpg".
- Transitional_fossil image "Pakicetus BW.jpg".
- Transitional_fossil width "220".
- Transitional_fossil subject Category:Evolutionary_biology.
- Transitional_fossil subject Category:Fossils.
- Transitional_fossil subject Category:Paleontology.
- Transitional_fossil subject Category:Phylogenetics.
- Transitional_fossil subject Category:Transitional_fossils.
- Transitional_fossil subject Category:Zoology.
- Transitional_fossil type Adult109605289.
- Transitional_fossil type CausalAgent100007347.
- Transitional_fossil type Dodo110022908.
- Transitional_fossil type Fossils.
- Transitional_fossil type LivingThing100004258.
- Transitional_fossil type Object100002684.
- Transitional_fossil type Oldster110376523.
- Transitional_fossil type Organism100004475.
- Transitional_fossil type Person100007846.
- Transitional_fossil type PhysicalEntity100001930.
- Transitional_fossil type TransitionalFossils.
- Transitional_fossil type Whole100003553.
- Transitional_fossil type YagoLegalActor.
- Transitional_fossil type YagoLegalActorGeo.
- Transitional_fossil comment "A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. This is especially important where the descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group. These fossils serve as a reminder that taxonomic divisions are human constructs that have been imposed in hindsight on a continuum of variation.".
- Transitional_fossil label "Anello mancante".
- Transitional_fossil label "Brakujące ogniwo ewolucji".
- Transitional_fossil label "Fossiele overgangsvormen".
- Transitional_fossil label "Fóssil de transição".
- Transitional_fossil label "Missing Link".
- Transitional_fossil label "Transitional fossil".
- Transitional_fossil label "Переходная форма".
- Transitional_fossil label "حلقة مفقودة".
- Transitional_fossil label "ミッシングリンク".
- Transitional_fossil sameAs Missing_Link.
- Transitional_fossil sameAs Fosil_peralihan.
- Transitional_fossil sameAs Anello_mancante.
- Transitional_fossil sameAs ミッシングリンク.
- Transitional_fossil sameAs Fossiele_overgangsvormen.
- Transitional_fossil sameAs Brakujące_ogniwo_ewolucji.
- Transitional_fossil sameAs Fóssil_de_transição.
- Transitional_fossil sameAs m.01w_kg.
- Transitional_fossil sameAs Q447188.
- Transitional_fossil sameAs Q447188.
- Transitional_fossil sameAs Transitional_fossil.
- Transitional_fossil wasDerivedFrom Transitional_fossil?oldid=600940251.
- Transitional_fossil depiction Spindle_diagram.jpg.
- Transitional_fossil isPrimaryTopicOf Transitional_fossil.