autapomorphy


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autapomorphy

(ô-tăp′ə-môr′fē)
n. pl. autapomor·phies
An evolved character or trait that is unique to a single species or group within a larger phylogenetic group. Speech is an autapomorphy of humans among primates.

au·tap′o·mor′phic adj.
References in periodicals archive ?
These depressions are also observed in Lusotitan atalaiensis lectotype, and might represent an autapomorphy of this taxon.
Reports differ on whether or not the inner surface of the proventriculus is toothed, and on what counts as teeth: one study claimed that absence of proventricular dentition is an autapomorphy of the Euphasmatodea (Tilgner et al.
The latter characteristic was suggested as an autapomorphy of the Orthenches group by Dugdale (1996).
satan the alveolar margin is dorsoventrally reduced at the mid-level of the maxilla, a probable autapomorphy of this taxon (fig.
In snakes and lacertilians, exclusive paired structures developed along the lateral wall of the cloaca - the hemipenis, regarded as an autapomorphy of that group (RIEPPEL, 2000; POUGH et al.
A reduced paraconid in the second lower premolar is an autapomorphy of Brachypotherium (Antoine, 2002).
quekettiana complex indicates that they too will have spermatophores with scale-like spines, suggesting that this is an autapomorphy for this smaller-shelled clade.
Therefore, the assessment of whether the low chromosome number is a synapomorphy of the clade or an autapomorphy of the specimens determined by Maury as B.
However, data obtained in this study permit us to reconsider the taxonomical positioning of this taxon in the subfamily Trichohelicinae Travassos, 1935, due to its unique synlophe pattern and female reproductive system morphology, representing an autapomorphy not observed in other Anoplostrongylinae species.
The aporous bifurcate sensilla chaetica could constitute an autapomorphy for the Neopseustidae but would need to be described further in other species of that family.