Noun
The word is derived from phylum
of Phylon
of Phylum
Source: Webster's dictionaryNearly all of the major kinds of life, divisions of life, phyla of animals, occur in the sea. Only about half of them can make it to land or freshwater. Sylvia Earle
Among the later subdivisions that have arisen are such entities as phyla, families, and tribes, as well as any number of ranks with prefixes (superfamilies, subfamilies, etc.). Source: Internet
A Natural History of the phyla of the Animal Kingdom. Source: Internet
Darwin also pondered the sudden appearance of many groups (i.e. phyla ) in the oldest known Cambrian fossiliferous strata. Source: Internet
Bolded items are components of all chordates at some point in their lifetimes, and distinguish them from other phyla. Source: Internet
Fauna A noteworthy feature of Paleozoic life is the sudden appearance of nearly all of the invertebrate animal phyla in great abundance at the beginning of the Cambrian. Source: Internet