cladistics

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cladistics

(klə-dĭs′tĭks)
n. (used with a sing. verb)
A system of classification based on the presumed phylogenetic relationships and evolutionary history of groups of organisms.

cla·dis′tic, cla·dis′ti·cal adj.
cla·dis′ti·cal·ly adv.

cladistics

an approach to CLASSIFICATION by which organisms are ordered and ranked entirely on a basis which reflects recent origin from a common ancestor, i.e. like a family tree. The system is concerned simply with the branching of the tree and not with the degree of difference. The latter is the concern of evolutionary taxonomists who oppose the cladistic approach.
References in periodicals archive ?
aperta as a sister taxon (Kelchner & Clark, 1997).
All analyses described herein are consistent with placement of the holopelagic Poeobius meseres within Flabelligeridae, and specifically as sister taxon to Therochaeta collarifera.
palliata as the sister taxon to the remainder taxa agreeing with previously reported topologies (Meireles et al.
9A), Nyctiphruretus is recovered as the sister taxon to the clade consisting of the other nonpareiasaurian Mezen river parareptiles and pareiasaurs.
By including Hippomane mancinella and its sister taxon Bonania cubana, a node is created that can be constrained to a minimum age of 40 mya based on the oldest reliable age estimate of the fossil Crepetocarpon perkinsii (Dilcher & Manchester, 1988; Potter & Dilcher, 1980).
At each node, the composite average set of shape coordinates was computed for each sister taxon and its first-level outgroup.
One of these, Amborellaceae (represented by Amborella trichopoda Baillon) has been identified recently as the sister taxon to all remaining angiosperms and has consequently become the focus of numerous investigations into its natural history and fundamental biology.
In none of the trees does Cordaianthus occur as a sister taxon with Emporia or any genus of the Utrechtiaceae.
This shag species was placed as sister taxon to the penguin species in the total evidence tree but as sister taxon to the petrel species in the taxonomic congruence tree.
The two North American Agelaius are identified as sister taxa, but the North American Xanthocephalus is the sister taxon to all Agelaius and close relatives.