: Phylum Chordata

Most diverse phylum; over 1,000,000 species; 90% of animals species are in this phylum Evolved ~530MYA Hexapoda Crustacea Bilateral Bilateral Well-

Characteristics of Phylum Annelida · They have a long and segmented body · Annelids are bilaterally symmetrical · They are triploblastic · Also, they exhibit

phylum Acanthocephala is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms,

phylum 2 meanings: 1 a major taxonomic division of living organisms that contain one or more classes An example is the phylum Click for more definitions