The morphology of the protoconch is usually very helpful as a taxonomic character.
2.
The presence or absence of this structure has been used as a taxonomic character.
3.
An important taxonomic character is the precise location of the anterior spiracles on the pleura of the thorax.
4.
The relationship of the other flower parts to the gynoecium can be an important systematic and taxonomic character.
5.
A minority of Ascomycota lack crosiers, hence the presence or absence of croziers is an important taxonomic character.
6.
In terms of microscopic characters, spore sizes were not sufficiently different between them to be used as discriminating taxonomic characters.
7.
In spite of the diversity of the genus itself, taxonomic characters useful for delimiting species within it are few, and many species are very difficult to tell apart.
8.
In 1991, after a major revision of the species and taxonomic characters, the herpetologists Pedro Ruiz-Carranza and John D . Lynch published a proposal for a taxonomic classification of the Centrolenidae based on monophyletic groups.
9.
They contain two large oil drops at either end; the oil drops are useful taxonomic characters that may be used to help distinguish " S . dudleyi " from some other " Sarcoscypha " species.
10.
Most tantalizingly, once morphological ( or molecular ) models of a species have been developed and demonstrated to be accurate, these models can be queried to determine which aspects of the observed patterns of variation and variation limits are being used to achieve the identification, thus opening the way for the discovery of new and ( potentially ) more reliable taxonomic characters.
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