The fact that some of the group are named as "heron" and some as "egret" has no taxonomic significance.

Later, their taxonomic significance became shown.

The taxonomic significance of this noded shape has yet to be fully investigated.

He recognised that variation arises from both internal (genotypic) and external environmental (phenotypic) causes and that only the former was of taxonomic significance.

Even within the Chivi Vireo, there are distinct variations in measurements, song and ecology, but the possible taxonomic significance of this remains unclear.

The variety albidocitrina, defined by Claude Casimir Gillet in 1876, is no longer considered to have independent taxonomic significance.

Slugs as a group are far from monophyletic; biologically speaking "slug" is a term of convenience with little taxonomic significance.

Duméril always considered observations on animal behaviour of taxonomic significance.

The taxonomic significance of either in undetermined, other than as used to define a particular genus.

This rested on claims that pre-orbital morphology did not have any taxonomic significance, a claim that detailed study of quarry sections later showed to be false.