Phylal

Phylum Aschelminthes. Roundworms, rotifers, and gastrotrichs are grouped together for anatomical reasons as one phylum, although some authorities give each a phylal status.

Source: wiktionary

A technique that is often poorly used is the “phylum and characteristics” approach. In this approach, students must memorize spellings of phylal names and lists of characteristics.

Source: wiktionary

The classification of organisms presented here is a general summary, down to the phylal level, with some groups carried down to still lower levels, and is published at the request of members of the Society for a comprehensive general grouping for guidance in further study on the basis of a selected bibliography.

Source: wiktionary