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symplesiomorphy

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symplesiomorphy
symplesiomorphy, n. Taxon. Brit. /sɪmˈpliːzɪə(ʊ)mɔːfi/, U.S. /sɪmˈplisiəˌmɔrfi/ [‹ sym- prefix + plesio- comb. form + -morphy comb. form. Compare slightly later symplesiomorphic adj.] The possession by two or more organisms or taxa of a shared primitive or ancestral character not exclusive to or cha... Oxford English Dictionary
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Plesiomorphy and symplesiomorphy
In phylogenetics, a plesiomorphy ("near form") and symplesiomorphy are synonyms for an ancestral character shared by all members of a clade, which does The term symplesiomorphy was introduced in 1950 by German entomologist Willi Hennig. wikipedia.org
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symplesiomorphic
symplesiomorphic, a. Taxon. Brit. /sɪmˌpliːzɪə(ʊ)ˈmɔːfɪk/, U.S. /sɪmˌplisiəˈmɔrfɪk/ [‹ sym- prefix + plesio- comb. form + -morphic comb. form, after symplesiomorphy n.] Of the nature of a symplesiomorphy.1964 Current Anthopol. 5 30 To that end he uses exclusively symplesiomorphic characters, which a... Oxford English Dictionary
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近祖共性:近祖共性是指在分支分類學中指來源於較遠祖先並存在於不同後裔類群 -百科知識中文網
學科：生物學 詞目：近祖共性 英文：symplesiomorphy 釋文：近祖共性是指在分支分類學中指來源於較遠祖先並存在於不同後裔類群中的相同近祖性狀。 相關詞條. 陳潮祖醫案精解 《陳潮祖醫案精解》是2010年03月人民衛生出版社出版的圖書，作者是賈波 沈濤。
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Apodiformes
However, the perching adaptation of the foot of Eocypselus on which this theory rests may just as well be a symplesiomorphy. wikipedia.org
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对单系群、并系群、复系群概念的深入理解 - 知乎
单系群（monophyletic group）： 依据共同衍征（synapomorphy）构建的类群。 并系群（paraphyletic group）： 依据共同祖征（symplesiomorphy）构建的类群。 复系群 或 多系群（polyphyletic group）： 依据趋同现象（convergence）构建的类群。 这个定义是最本质的定义。 它本身表达得已经比较清楚了，但是在分析具体系统树时，你会很烧脑。 再来看第二个版本： Version 2 单系群（monophyletic group）： 包含一个共同祖先及其所有后代的集合。 并系群（paraphyletic group）： 包含一个共同祖先及其部分后代的集合。
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Apomorphy and synapomorphy
For example, the presence of mammary glands is a synapomorphy for mammals in relation to tetrapods but is a symplesiomorphy for mammals in relation to Symplesiomorphy – an ancestral trait shared by two or more taxa. Plesiomorphy – a symplesiomorphy discussed in reference to a more derived state. wikipedia.org
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paraphyletic
paraphyletic, a. Taxon. (pærəfaɪˈlɛtɪk) [f. para-1 1 + phyletic a.] Of a group of taxa: containing some but not all of the descendants of a common ancestor, esp. when the group has been considered a taxon on the basis of shared primitive characteristics. Cf. polyphyletic a.1965 W. Hennig in Ann. Rev... Oxford English Dictionary
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Sturnia
Their similarity to Sturnia proper is probably simply a symplesiomorphy. References Sturnidae Bird genera Taxa named by René Lesson wikipedia.org
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autapomorphy
autapomorphy, n. Taxon. Brit. /ɔːˈtapəmɔːfi/, U.S. /ɔˈtæpəˌmɔrfi/, /ɑˈtæpəˌmɔrfi/ [‹ auto- comb. form1 + apo- prefix + -morphy comb. form. Compare slightly later apomorphy n.] An autapomorphic character.1959 Systematic Zool. 8 118/1 Characters are plesiomorphic..or are apomorphic..and their value fo... Oxford English Dictionary
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Autapomorphy
Symplesiomorphy – an ancestral trait shared by two or more taxa. Plesiomorphy – a symplesiomorphy discussed in reference to a more derived state. wikipedia.org
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Cribellum
Today, it is believed that the precursor of all Araneomorphae was cribellate (symplesiomorphy), and that this function was lost in some araneomorph spiders wikipedia.org
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Phytodinosauria
out that the saurischian pelvic shape is not a valid diagnostic new trait or synapomorphy but a basal character inherited from reptilian ancestors or symplesiomorphy wikipedia.org
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Cladistics
When two or more taxa that are not nested within each other share a plesiomorphy, it is a symplesiomorphy (from syn-, "together"). Since cold-bloodedness is a plesiomorphy, inherited from the common ancestor of traditional reptiles and birds, and thus a symplesiomorphy of turtles, wikipedia.org
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Asymphorodes
The male genitals are generally similar to those of cosmet moths, but this may be a symplesiomorphy. wikipedia.org
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