It is no longer an accepted taxonomic grouping as it is considered a polyphyletic and/or paraphyletic grouping.

Apogastropoda was previously used as a major taxonomic grouping of sea snails, marine gastropod molluscs.

However this taxonomic grouping is no longer used (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

They are found in all major taxonomic groupings of both plants and animals.

This region is notable not just for the high number of endemic species, but for endemism in higher-level taxonomic groupings too.

Doridacea is a taxonomic grouping of dorid nudibranchs, shell-less marine gastropod mollusks.

Yeasts do not form a single taxonomic or phylogenetic grouping.

Neritimorpha is a taxonomic grouping, an unranked clade of snails, gastropod mollusks.

Corallines have been divided into two groups, although this division does not constitute a taxonomic grouping:

There have also been studies on the taxonomic grouping of Lucilia based on geography.