paraphyletic


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Related to paraphyletic: monophyletic, Monophyly, Monophyletic group

paraphyletic

[‚par·ə·fī′led·ik]
(systematics)
Describing a taxonomic group that does not contain all of the descendants of its most recent common ancestor.
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The placement of the Critically Endangered species Phyllomelia coronata within the Cuban genus Mazaea (Rubiaceae), makes the latter paraphyletic (Manns & Bremer, 2010).
Thus, here, we also test the hypothesis that male urogenital duct anatomy will support a more traditional salamander phylogeny with a monophyletic Salamandroidea over a more controversial phylogeny with a paraphyletic Salamandroidea.
This study confirmed Mesoveliidae as being the sister group to all other families of Gerromorpha and also the close relationship between the Gerridae and Veliidae, but suggested that the superfamilies Gerroidea (Hermatobatidae + Gerridae + Veliidae) and Hydrometroidea (Paraphrynoveliidae + Macroveliidae + Hydrometridae), the family Veliidae, and the gerrid subfamily Cylindrostethinae were paraphyletic entities, and that Gerrinae, Haloveliinae, Ocelloveliinae, Paraphrynoveliidae, and Veliinae lacked convincing morphological diagnostic characters.
Obolaria and Gentiana were the closest genera to Swertia, which is paraphyletic including Halenia, Comastoma, Gentianella, and Lomatogonium.
Two of these appear to the natural species groups and the third, containing species with slender, needle-shaped denticles in random and dense array, is likely Paraphyletic (see Straube et al.
Results from that study also suggested that the monotropoideae are monophyletic but that the myco-heterotrophic members may form a paraphyletic group.
showed that the subfamily Pitcairnioideae was strikingly paraphyletic, with both tillandsioids and bromelioids arising from within it.
Although Ostreinae is paraphyletic to Lophinae in our best trees (as indicated by the quotation marks around Ostreinae in Fig.
To avoid naming a paraphyletic group, the species in the more basal portion of the clade should be 1) removed from Zalopyr and placed in their own subgenera, 2) the name Emmelas Jordan and Evermann (1898) applied to the basalmost member, S.
Some traditional taxonomic groupings however, are considered paraphyletic because they do not include all descendants.
Parenti (1981), based on morphological characters, provided the first phylogenetic analysis of rivulids, in which Rivulus was considered a paraphyletic group with their nominal species included at least in two basal rivulid lineages.