In fact, the mandible of L. aenigmamus exhibits an original combination of morphological characters that can be considered as intermediate between sciurognathous and hystricognathous morphologies.
There are few distinctive morphological characters that unite them.
The leaves of Ephedra, Gnetum, and Welwitschia are strikingly different in form and venation and provide morphological characters that are definitive for each of the genera.
There are morphological characters that may help to differentiate between trackways produced by lungfish or other terrestrially locomoting fish and those produced by early tetrapods.
Ninety-nine morphologicharactersthat that show variation within the larger clade to which the Rhodonessa caryophyllacea and its closest relatives belong were taken from Livezey (1996) (see Supplementary material for the data matrix).
Our understanding of the evolution of oral structures within the Colpodida is confounded by the low number of morphological characters that can be used in constructing hypotheses, and by the low taxon and character sampling in molecular phylogenetic analyses designed to assess these hypotheses.
What is more, this study showed that hybrids between T. sherloki and T. juazeirensis have intermediate morphological characters that may give them higher fitness than their parents, and thus may advance the process of house infestation by either fight or walking in case of an eventual natural hybridization.
The diagnostic morphological characters that distinguish I. pandurata from its allies are the oblanceolate leaves aggregated on the stem apex, with white macula beneath, the narrow lanceolate bracteole, and the subrotund dorsal petal with apparent stalk.
Moreover it offers a new view of morphological characters that is valuable for practicing systematists.
An endodermal marginal sphincter is one of the few morphological characters that seem to have phylogenetic information for sea anemones up to now.
The genetic isolation of PAP Morph 5 is mirrored by some morphological characters that could have been neglected, leaving this morph hidden until now.
