List of animal classes

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The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by no means be considered complete and authoritative and should be used carefully.

Unknown phylum[edit | edit source]

Acanthocephala (thorny-headed worms)[edit | edit source]

Acoelomorpha (simple soft-bodied flatworms)[edit | edit source]

Annelida (segmented worms)[edit | edit source]

Arthropoda (arthropods: insects, crustaceans, arachnids, centipedes, and millipedes)[edit | edit source]

Chelicerata[2][edit | edit source]

Crustacea[3][edit | edit source]

Hexapoda[9][edit | edit source]

Myriapoda[10][edit | edit source]

Brachiopoda ("lamp shells")[edit | edit source]

Bryozoa (moss animals)[edit | edit source]

Chaetognatha (arrow worms)[edit | edit source]

Chordata (vertebrates, tunicates, and lancelets)[edit | edit source]

Cephalochordata[edit | edit source]

Tunicata[edit | edit source]

Vertebrata[edit | edit source]

Agnatha[edit | edit source]

Cyclostomata[edit | edit source]

Gnathostomata[edit | edit source]

Osteichthyes[edit | edit source]
Tetrapoda[edit | edit source]

Cnidaria (marine stinging animals)[edit | edit source]

Cycliophora (tiny marine animals)[edit | edit source]

Dicyemida (rhombozoa)[edit | edit source]

  • Dicyemida

Echinodermata (starfish, sea urchins, sand dollars, sea lilies, and others)[edit | edit source]

Crinozoa[edit | edit source]

Asterozoa[edit | edit source]

Echinozoa[edit | edit source]

Entoprocta[edit | edit source]

  • Entoprocta

Gastrotricha (hairybacks)[edit | edit source]

  • Gastrotricha

Gnathostomulida (jaw worms)[edit | edit source]

  • Gnathostomulida

Hemichordata[edit | edit source]

Kinorhyncha (mud dragons)[edit | edit source]

Loricifera[edit | edit source]

Mollusca (mollusks)[edit | edit source]

Nematoda (roundworms)[edit | edit source]

Nematomorpha (horsehair worms)[edit | edit source]

Nemertea (ribbon worms)[edit | edit source]

Onychophora (velvet worms)[edit | edit source]

Orthonectida[edit | edit source]

Placozoa[edit | edit source]

Platyhelminthes (flatworms)[edit | edit source]

Porifera (sponges)[edit | edit source]

Priapulida (priapulid worms)[edit | edit source]

Rotifera (rotifers)[edit | edit source]

Tardigrada (tardigrades, water bears, or moss piglets)[edit | edit source]

Xenoturbellida[edit | edit source]

References[edit | edit source]

  1. Ramel, Gordon. "The Annelids (Phylum Annelida)". www.earthlife.net. 
  2. Integrated Taxonomic Information System. "ITIS Standard Report Page: Chelicerata". www.itis.gov. 
  3. Integrated Taxonomic Information System. "ITIS Standard Report Page: Crustacea". www.itis.gov. 
  4. Regents of the University of California. "Introduction to Brachiopoda". www.ucmp.berkeley.edu. 
  5. "Archived copy" (PDF). Archived from the original (PDF) on 2014-10-06. Retrieved 2014-10-03. 
  6. Conlan, Kathleen E.; Bousfield, Edward. "Malacostracan | crustacean". www.britannica.com. 
  7. http://atiniui.nhm.org/pdfs/3839/3839.pdf
  8. http://atiniui.nhm.org/pdfs/3839/3839.pdf
  9. "ITIS Standard Report Page: Hexapoda". www.itis.gov. Integrated Taxonomic Information System. 
  10. "ITIS Standard Report Page: Myriapoda". www.itis.gov. Integrated Taxonomic Information System.