synapomorphy

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Related to Synapomorphic: Apomorphy

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 ?
The value presented by this femur for the ratio transverse/anteroposterior width fits in the range that seems to be synapomorphic of the Titanosauriformes (Wilson, 2002; Upchurch et al., 2004; see values presented by Mannion et al., 2013).
Presently, the superfamily is supported by three unambiguously optimized synapomorphic characters and each family is also strongly evaluated through optimized characters (i.e., the Nepidae by three characters and the Belostomatidae by four characters).
Fusion between the first and second presacral vertebrae was considered as a synapomorphic character shared by Beelzebufo and Ceratophrys by EVANS et al.
Descriptive statistics (e.g., tree length, CI and RI) indicated more synapomorphic value and less homoplasy when urogenital duct characters were optimized to a phylogeny with a monophyletic Salamandroidea.
The possession of a pair of clypeal hairs (occasionally a central hair in some workers of some species), plus major workers with elongated heads (convergent in some Pheidole and Solenopsis) could be synapomorphic traits for the Carebara group.
Lourenco (1986) considered the stridulation organ to be synapomorphic for Rhopalurus, a hypothesis that has yet to be tested cladistically.
It has been suggested that a tymbal-like communication is synapomorphic for Auchenorrhyncha + Coleorrhyncha + Heteroptera (Hoch et al.
Spikelet pairing is generally cited as synapomorphic for Andropogoneae, but developmental studies show that it must be a deeper synapomorphy, because it appears in other Panicoideae such as Ixophorus (Kellogg et al., 2004) and Paspalum (Kellogg, 2000).
This clade is supported by unambiguous synapomorphic characters (CI=1 and RI=1) such as the lateral edges of the clypeus strongly elevated over the eyes (character 2) and a well developed frontal carina (character 3).
stramineum was based on the autoapomorphies present in this species and in the lack of synapomorphic morphological characters joining S.
The White Narrows Xantusia specimens are similar to those described by Norell in that they are all characterized by small size, the plesiomorphic presence of a dental gutter, and the synapomorphic reduction of tricuspid teeth.