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...

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...

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

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

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

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

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

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...

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...