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Definition of Phyla:
(plu. of phylum) In taxonomy, a primary grouping consisting of animals constructed on a similar general plan, and thought to be evolutionarily related. [1].
This is the common definition for Phyla, other definitions can be discussed in the article


Phylum is a taxonomic rank at the level below Kingdom and above Class.
Examples: Porifera (Sponges), Platyhelminthes (flatworms, flukes and tapworms).
Formally, a phylum can be used for any biological domain, but traditionally it was always used for animals, whereas “division” was traditionally often used for plants, fungi, etc.


  1. Lawrence, E. (2005). Henderson’s dictionary of biology. Pearson Education Limited, 13th ed., Harlow. 748 p