In phylogenetics, an autapomorphy is a distinctive feature, known as a derived trait, that is unique to a given taxon. That is, it is found only in one...

If lost in all but one, it can be hard to distinguish from an autapomorphy. Autapomorphy – a distinctive derived trait that is unique to a given taxon...

Primitive Plesiomorphy Symplesiomorphy Derived Apomorphy Synapomorphy Autapomorphy Group types Monophyly Paraphyly Polyphyly Nomenclature Phylogenetic nomenclature...

venation that is actually a highly modified penniparallel one is an autapomorphy of some Melanthiaceae, which are monocots; e.g., Paris quadrifolia (True-lover's...

based on looking at the specimens assigned to Oxalaia, and the supposed autapomorphies of this taxon to be insignificant and fall within the hypodigm of Spinosaurus...

attribution of the Vale Frades specimen to a new species, claiming that the autapomorphies proposed in the diagnosis of A. europaeus can be explained by individual...

buttocks and a long, stout, permanently adducted hallux. These are hominin autapomorphies, not found in other mammals or other bipeds. It seems unlikely that...

still resemble the common ancestor of the Spheniscinae, as Aptenodytes' autapomorphies are, in most cases, fairly pronounced adaptations related to that genus'...

(in the sense that they lacked the full range of living squirrels' autapomorphies). The distribution and diversity of such ancient and ancestral forms...

monophyletic due to several unique conserved morphological characteristics (autapomorphy) such as its naked filamentous gills and thin thoracopods and by molecular...

size. The shape of the transverse process on the caudal vertebra is an autapomorphy that distinguishes Caletodraco from all other abelisaurids. Caletodraco...

placed as their sister group within the clade Calmanostraca. The "central autapomorphy" of the Notostraca is the abandonment of filter feeding in open water...

were able to establish some distinctive features. Two of these are autapomorphies, i.e. derived features that are unique. In bottom view, the greater...

the pelvic and shoulder girdle. Proganochelys was also known for its autapomorphies, which included a tail club and a tubercle on the basioccipital. The...

further indication, according to Horner, was the failure to identify true autapomorphies – unique traits that prove a taxon is a separate species. The fossils...

basis of three autapomorphies (unique derived features) of the front portion of each dorsal vertebra, as well as a single autapomorphy of the sacrum....

groups. On the other hand, the basal taxa may exhibit many morphological autapomorphies. So although Acoraceae is the sister group to the remaining monocotyledons...

questioned in 1996 by Kellner who found that Irritator's skull lacked the one autapomorphy (distinguishing feature) diagnosed in maniraptorans at the time, which...

this genus are differentiated from other pliosaurids based on seven autapomorphies, including teeth that are triangular in cross section. Their diet would...

group. It is in some respects more similar to lampreys, but shows key autapomorphies of hagfish. In recent years, hagfish have become of special interest...

unique black-and-white color pattern of the "monochrome" magpies is an autapomorphy. Compared to the Eurasian magpie, it is somewhat stockier, with a proportionally...

nasoantorbital fenestra, which is the largest opening in the skull. Another autapomorphy that Pterodactylus has is that the skull and jaws were straight, which...

peculiar aspects of the skull are now gone. For example, the single autapomorphy used to distinguish it as a new, valid species is a foreshortened vault...

suggests that features of the bone would effectively demonstrate that autapomorphies of some tyrannosaurid taxa would be inadequate, due to the broad range...

Jacques A. Gauthier. 2011. Autapomorphies of Diapsid Clades. Version 20 April 2011. http://tolweb.org/accessory/Autapomorphies_of_Diapsid_Clades?acc_id=465...

18563/pv.43.1.e1. S2CID 214247325. Laurin, M. and Reisz, R. R., 1997, Autapomorphies of the main clades of synapsids - Tree of Life Web Project Synapsida:...

anamorphic, anamorphism, anamorphosis, anthropomorphism, apomorphy, autapomorphy, automorphism, catamorphism, dimorphic, dimorphism, dysmorphic, dysmorphophobia...

rather intermediate between cormorants and darters (and lack clear autapomorphies of either). Thus, they may be quite basal members of the Palacrocoracoidea...

Some, but not all, of the features in a diagnosis are also autapomorphies. An autapomorphy is a distinctive anatomical feature that is unique to a given...

Some, but not all, of the features in a diagnosis are also autapomorphies. An autapomorphy is a distinctive anatomical feature that is unique to a given...