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]
- Archiacanthocephala
- Eoacanthocephala
- Palaeacanthocephala (ancient thornheads)
Acoelomorpha (simple soft-bodied flatworms)[edit | edit source]
Annelida (segmented worms)[edit | edit source]
- Aelosomata[1]
- Clitellata (earthworms)
- Myzostomida
- Polychaeta (bristle worms)
- Echiura (spoon worms)
- Sipuncula (peanut worms)
Arthropoda (arthropods: insects, crustaceans, arachnids, centipedes, and millipedes)[edit | edit source]
Chelicerata[2][edit | edit source]
- Arachnida (spiders, scorpions, and kin)
- Xiphosura (horseshoe crabs; only 4 extant species)
- Pycnogonida (sea spiders)
Crustacea[3][edit | edit source]
- Branchiopoda (fairy shrimp, tadpole shrimp, water fleas, and clam shrimp)[4]
- Cephalocarida (horseshoe shrimp; only 12 described species)[5]
- Malacostraca (crabs, lobsters, crayfish, krill, various shrimp, woodlice, and kin)f[6]
- Maxillopoda (barnacles, copepods, fish lice, and other groups)[7]
- Ostracoda (seed shrimp)[8]
- Remipedia
Hexapoda[9][edit | edit source]
- Entognatha (coneheads, two-pronged bristletails and springtails)
- Insecta (insects)
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]
- Leptocardii (lancelet)
Tunicata[edit | edit source]
- Appendicularia (larvaceans)
- Ascidiacea (sea squirts)
- Sorberacea
- Thaliacea (salps, pyrosomes, and doliolids)
Vertebrata[edit | edit source]
Agnatha[edit | edit source]
Cyclostomata[edit | edit source]
- Myxini (hagfish)
- Petromyzontida (lamprey)
Gnathostomata[edit | edit source]
- Chondrichthyes (cartilaginous fish, mostly sharks and rays)
Osteichthyes[edit | edit source]
- Actinopterygii (ray-finned fish, which includes most familiar bony fish)
- Sarcopterygii (lobe-finned fish)
Tetrapoda[edit | edit source]
Cnidaria (marine stinging animals)[edit | edit source]
- Anthozoa (anemones and corals)
- Cubozoa (box jellyfish)
- Hydrozoa (hydroids)
- Malacosporea (marine parasites)
- Myxosporea (marine parasites)
- Scyphozoa (true jellyfish)
- Staurozoa (stalked jellyfish)
- Polypodiozoa (marine parasites)
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]
- Crinoidea (sea lilies and feather stars)
Asterozoa[edit | edit source]
- Asteroidea (star fish)
- Ophiuroidea (brittle stars)
Echinozoa[edit | edit source]
- Echinoidea (sea urchins)
- Holothuroidea (sea cucumbers)
Entoprocta[edit | edit source]
- Entoprocta
Gastrotricha (hairybacks)[edit | edit source]
- Gastrotricha
Gnathostomulida (jaw worms)[edit | edit source]
- Gnathostomulida
Hemichordata[edit | edit source]
- Enteropneusta (acorn worms)
- Pterobranchia
Kinorhyncha (mud dragons)[edit | edit source]
Loricifera[edit | edit source]
Mollusca (mollusks)[edit | edit source]
- Bivalvia (clams, mussels, scallops, and kin)
- Caudofoveata
- Cephalopoda (octopuses, squids and cuttlefish)
- Gastropoda (snails and slugs)
- Monoplacophora
- Polyplacophora (chitons, or sea cradles)
- Scaphopoda (tusk shells)
- Solenogastres
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]
- Cestoda (tapeworms and relatives)
- Monogenea
- Trematoda (flukes)
- Turbellaria (e.g. Dugesia)
Porifera (sponges)[edit | edit source]
- Calcarea (calcareous sponges)
- Demospongiae
- Hexactinellida (glass sponges)
- Homoscleromorpha
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]
- ↑ Ramel, Gordon. "The Annelids (Phylum Annelida)". www.earthlife.net.
- ↑ Integrated Taxonomic Information System. "ITIS Standard Report Page: Chelicerata". www.itis.gov.
- ↑ Integrated Taxonomic Information System. "ITIS Standard Report Page: Crustacea". www.itis.gov.
- ↑ Regents of the University of California. "Introduction to Brachiopoda". www.ucmp.berkeley.edu.
- ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2014-10-06. Retrieved 2014-10-03.
- ↑ Conlan, Kathleen E.; Bousfield, Edward. "Malacostracan | crustacean". www.britannica.com.
- ↑ http://atiniui.nhm.org/pdfs/3839/3839.pdf
- ↑ http://atiniui.nhm.org/pdfs/3839/3839.pdf
- ↑ "ITIS Standard Report Page: Hexapoda". www.itis.gov. Integrated Taxonomic Information System.
- ↑ "ITIS Standard Report Page: Myriapoda". www.itis.gov. Integrated Taxonomic Information System.