If allopatric taxa exhibit diagnostic character differences, they are species under the PSC.
Alternatively, an expanded Broussonetia by including M. scandens would not only necessitate further nomenclatural changes but also generate a genus with no obvious diagnostic character.
The eight pairs of muscles of the Monoplacophora are the single most diagnostic character of the group and unite fossils and living representatives across half a billion years of time.
The diagnostic character of various output parameters was analyzed and the results showed that the SDT should be carried out with a percentage of the design strength (ideally 40%) instead of working with a fixed load.
The plate overlap pattern is considered conserved at higher taxonomic levels, and the divergent keystone Plate 3′ in Parvodinium marciniakii, sp. nov., thus appears as a striking diagnostic character.
For example, the multiple paired muscle scars are a diagnostic character of both fossil and living Monoplacophora, and this arrangement provides space for the placement of the kidneys in the roof of the mantle groove and the related functioning of the gills as ventilators rather than respiratory surfaces.
A good example of a diagnostic character that can be used to identify almost any synapsid is the presence of the so-called synapsid temporal opening, an opening on the side of the skull in the vicinity of where the jaw musculature attaches, which can be found (with slight modifications) in synapsids as distinctive as Dimetrodon and living mammals, including humans (Fig. 5).
The most important and unambiguous diagnostic character that separates the two species is the shape of staminate catkins, with the dioecious B. kaempferi bearing spicate catkins ca. 1.5 2.5 cm long (Fig. 1n) and the monoecious B. monoica bearing globose ones ca. 1 cm across (Fig. 1c, d).
This homologous structure is a diagnostic character that helps define this clade (related group) of primates.
A microscope provides a more definitive way of distinguishing the two: the hyphae in the sclerotia of C. cookei are rounded, while those of C. tuberosa are elongated; this diagnostic character is apparent with both fresh and dried material of the two species.
trnH-psbA showed simple diagnostic character at single position in G. barbadense.
