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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

Acanthocephala (thorny-headed worms)

Acoelomorpha (simple soft-bodied flatworms)

Annelida (segmented worms)

Arthropoda (arthropods: insects, crustaceans, arachnids, centipedes, and millipedes)

Chelicerata[2]

Crustacea[3]

Hexapoda[9]

Myriapoda[10]

Brachiopoda ("lamp shells")

Bryozoa (moss animals)

Chaetognatha (arrow worms)

Chordata (vertebrates, tunicates, and lancelets)

Cephalochordata

Tunicata

Vertebrata

Agnatha

Cyclostomata

Gnathostomata

Tetrapoda
Osteichthyes

Cnidaria (marine stinging animals)

Cycliophora (tiny marine animals)

Dicyemida (rhombozoa)

  • Dicyemida

Echinodermata (starfish, sea urchins, sand dollars, sea lilies, and others)

Crinozoa

Asterozoa

Echinozoa

Entoprocta

  • Entoprocta

Gastrotricha (hairybacks)

  • Gastrotricha

Gnathostomulida (jaw worms)

  • Gnathostomulida

Hemichordata

Kinorhyncha (mud dragons)

Loricifera

Mollusca (mollusks)

Nematoda (roundworms)

Nematomorpha (horsehair worms)

Nemertea (ribbon worms)

Onychophora (velvet worms)

Orthonectida

Placozoa

Platyhelminthes (flatworms)

Porifera (sponges)

Priapulida (priapulid worms)

Rotifera (rotifers)

Tardigrada (tardigrades, water bears, or moss piglets)

Xenoturbellida

References

  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. ^ https://www.uni-ulm.de/fileadmin/website_uni_ulm/nawi.biodok/publikationen/2011_Olesen_etal_Cephalocarida-k.pdf
  6. ^ Conlan, Kathleen E.; Bousfield, Edward. "Malacostracan | crustacean". www.britannica.com.  delete character in |title= at position 15 (help)
  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. 
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