From MarineSpecies Introduced Traits Wiki
(plu. of phylum) In classification, a primary grouping consisting of animals constructed on a similar general plan, and thought to be evolutionarily related. Examples: Porifera (Sponges), Platyhelminthes (flatworms, flukes and tapworms)..
- Lawrence, E. (2005). Henderson’s dictionary of biology. Pearson Education Limited, 13th ed., Harlow. 748 p