List of animal classes


The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 24 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.

[Annelida] (segmented worms)

[Arthropoda] (insects, crustaceans, arachnids, centipedes and others)

[Chelicerata]

Source:

[Myriapoda]

Source:

[Pancrustacea]

Source:

[Hexapoda]

Source:

[Brachiopoda] (lamp shells)

[Bryozoa] (moss animals)

[Chaetognatha] (arrow worms)

Chordata">Chordate">Chordata (vertebrates, tunicates, and lancelets)

[Cephalochordata]

[Tunicata]

[Vertebrata]

[Cyclostomata] (jawless fish)

[Gnathostomata] (jawed fish)

[Cnidaria] (marine stinging animals)

[Anthozoa] ([coral]s and [sea anemone]s)

[Medusozoa] ([jellyfish] and hydrozoans)

[Endocnidozoa] (marine parasites)

[Ctenophora] (comb jellies)

[Cycliophora] (tiny marine animals)

[Dicyemida] (rhombozoa)

  • Rhombozoa

[Echinodermata] (sea stars, sea urchins, sand dollars, sea lilies, and others)

[Crinozoa]

[Asterozoa]

[Echinozoa]

[Hemichordata]

[Kinorhyncha] (mud dragons)

[Mollusca] (mollusks)

[Nematoda] (roundworms)

[Nematomorpha] (horsehair worms)

[Nemertea] (ribbon worms)

[Placozoa]

[Platyhelminthes] (flatworms)

[Neodermata] (parasitic worms)

[Porifera] (sponges)

[Priapulida] (priapulid worms)

[Rotifera] (rotifers)

[Acanthocephala] (thorny-headed worms)

Source:

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

[Xenacoelomorpha]

[Acoelomorpha] (simple soft-bodied flat worms, paraphyletic)