synapomorphy

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Related to Synapomorphies: Apomorphy, Symplesiomorphy

synapomorphy

(si-nap'ō-mōr-fē),
Species-specific unique embryologic features.
[syn- + apo- + morph- + -y]

synapomorphy

(sĭ-năp′ə-môr′fē)
n. pl. synapomor·phies
An evolved character or trait that is shared by two or more taxonomic groups and is considered to have originated in their common ancestor. Hair is synapomorphic for marsupials, primates, and all other taxa that are grouped together in the class Mammalia.

syn·ap′o·mor′phic adj.

synapomorphy

the sharing of derived characters by different species.
References in periodicals archive ?
Figure 18 and Table 2 summarize the possible morphological and anatomical synapomorphies of stem and leaf characters observed in the subtribe Lychnophorinae.
However, no synapomorphies have been identified to date that would link the specimen from the Blomidon Formation with the geologically considerably older Rutiodon carolinensis.
Goniopholididae (Node 1) is a reasonably well-supported node (Bremer = 3; but bootstrap < 50%) diagnosed by the presence of the following unambiguous synapomorphies: ventralmost neurovascular foramina high in posterior region of maxilla and very distant to the alveoli; presence of lateral fossae next to the alveolar margin; presence of a maxillary depression next to the maxilla-jugal contact; frontoparietal suture medially placed to the dorsal end of postorbital bars or slightly anterior; anterior process of palatines short, with length subequal to width.
Mitochondrial genome sequence of Unionicola parkeri (Acari: Trombidiformes: Unionicolidae): molecular synapomorphies between closely-related Unionicola gill mites.
The Nepoidea are recognized on the basis of three synapomorphies (1-3), (28-1), and (38-1) and represent the most basal group consisting of two families: the Belostomatidae and the Nepidae.
For Koutnik (1984) Chamaesyce is characterized by unusual synapomorphies, among them the [C.SUB.4] photosynthesis (Kranz structure).
In this case we have identified three well-supported clades with several molecular synapomorphies in the 16S and H3 genes.
Our analytical strategy can be summarized in the following steps: classify the patient specimens into clades (a cluster of specimens located on the cladogram) onto cladogram through parsimony analysis of their gene-expression data; identify shared genes with abnormal expression (termed synapomorphies in phylogenetic vocabulary) for each clade; and identify genetic pathways affected by abnormal gene expression for all AMD specimens and/or for each clade.
This subdivision of this subclade which is neatly held by the synapomorphies i.e., lateral margins of venter contrastedly pale appears to fall into two subdivisions i.e., C.
satan could be included within calyptocephalellids on the basis of the following synapomorphies: 1-presence of dorsoventrally extended pars dentalis of premaxilla and maxilla, 2-step-like palatine shelf of maxilla, 3-high and laminar ascending process of maxilla, 4-transverselly expanded articular surface of presacral vertebrae centra, 5-dorsally oriented sacral diapophyses, and 6-symmetrical distal end of humerus (Appendix 3; see below).
the lack of reliable synapomorphies suggests that Orchelimum and its three subgenera are not monophyletic, and all may eventually be subsumed into the speciose genus Conocephalus (naskrecki 2000).
The clade is strongly supported and diagnosed with convincing synapomorphies, such as the salivary pump being laterally inflated from behind, the preapically inserted pretarsus, and the asymmetrical of reduced parempodia (Damgaard, 2008b).