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Related to apomorphy: Autapomorphy


n. pl. ap·o·mor·phies
An evolved character or trait unique to a particular phylogenetic group of organisms. The vertebral column is an apomorphy of vertebrates.

ap′o·mor′phic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
eugeniae shows an exclusive apomorphy, gall indumentary with trichomes (38), not shared with others Stephomyia.
The presence of an internal odontophore in relation to the mouth frame ossicles is an apomorphy for recent asteroids (Mooi and David, 2000).
Timema have only a few, large appendices while (considerably longer) Euphasmatodea species have dozens of smaller bulbs, suggesting the increases in the numbers of appendices are an apomorphy of Euphasmatodea and/or due to allometric differences.
The apomorphy of metriorhynchids is state (1) instead of state (0) as was said in Young et al.
This infraorder represents a monophyletic taxon, which is supported by one syn(apomorphy) character (27-1; absence of the elongated plate sensillum).
It is not clear why Brooks [4] considered this feature as an apomorphy for the Nothochrysa group, when earlier Brooks and Barnard [2] reported several genera in the group as being without microtholi and it was known that the structures occur within Pimachrysa.
This has been strongly refuted by Scholtz and Kamenz (2006) who argue that booklungs are an apomorphy of Araneae, that the Araneae are monophyletic and that they resulted from a single terrestrialisation event in their common stem lineage.
The detection of this apomorphy can be correlated to ecological peculiarities of this species, whose studied population is relatively isolated in the lakes inside the Parque Ambiental de Belem.
He argued that the unusual pretarsal structure can be considered as an apomorphy of the genus and noted the striking similarity of the toothed shape of the claw to emesine species of assassin bugs living in spider webs.
The apomorphy of relatively short spermathecal duct and tube like spermathecal gland, broadly long arms of vertical process and paramere with three teeth like processes closely relate concinnulus, evanescens, festivus, koenigii, olivaceus, poecilus, rosaceus, similis, solenis and transversalis.
Though Solenostomidae - the sister-group of Syngnathidae - share many characters and a common evolutionary history with them, the new movement of seahorse tail can be considered a real apomorphy into this family (Hale, 1993).