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 NONE 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.
Acanthocephala (thorny-headed worms)
[edit | edit source]- Archiacanthocephala
- Eoacanthocephala
- Palaeacanthocephala (ancient thornheads)
- Polyacanthocephala
Acoelomorpha (simple soft-bodied flatworms)
[edit | edit source]Annelida (segmented worms)
[edit | edit source]- Clitellata (earthworms, leeches)
- Polychaeta (bristle worms)
- Sipuncula (peanut worms)
Arthropoda (arthropods: insects, crustaceans, arachnids, centipedes, and millipedes)
[edit | edit source]Source:[1]
- Arachnida (spiders, scorpions, and kin)
- Xiphosura (horseshoe crabs)
- Pycnogonida (sea spiders)
Source:[2]
- Branchiopoda (fairy shrimp, tadpole shrimp, water fleas, and clam shrimp)[3]
- Cephalocarida (horseshoe shrimp)[4]
- Pentastomida (tongue worms)
- Branchiura (fish lice)
- Mystacocarida
- Copepoda
- Ostracoda (seed shrimp)[5]
- Malacostraca (crabs, lobsters, crayfish, krill, various shrimp, woodlice, and kin)[6]
- Thecostraca (barnacles)
- Remipedia
Source:[7]
- Entognatha (coneheads, two-pronged bristletails and springtails)
- Insecta (insects)
Source:[8]
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]- Leptocardii (lancelet)
- Appendicularia (larvaceans)
- Ascidiacea (sea squirts, paraphyletic with respect to Thaliacea)
- Thaliacea (salps, pyrosomes, and doliolids)
- Myxini (hagfish)
- Petromyzontida (lamprey)
- Chondrichthyes (cartilaginous fish: chimeras, sharks and rays)
- Osteichthyes
- Actinopterygii (ray-finned fish, which includes most familiar bony fish)
- Sarcopterygii
Cnidaria (marine stinging animals)
[edit | edit source]- Octocorallia
- Hexacorallia
- Ceriantharia
- Cubozoa (box jellyfish)
- Hydrozoa (hydroids)
- Myxozoa (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 (sea stars, sea urchins, sand dollars, sea lilies, and others)
[edit | edit source]- Crinoidea (sea lilies and feather stars)
- Asteroidea (sea star)
- Ophiuroidea (brittle stars)
- Echinoidea (sea urchins)
- Holothuroidea (sea cucumbers)
Gastrotricha (hairybacks)
[edit | edit source]Gnathostomulida (jaw worms)
[edit | edit source]- Enteropneusta (acorn worms)
- Pterobranchia
Kinorhyncha (mud dragons)
[edit | edit source]Mollusca (mollusks)
[edit | edit source]- Aplacophora
- Bivalvia (clams, mussels, scallops, and kin)
- Cephalopoda (octopuses, squids and cuttlefish)
- Gastropoda (snails and slugs)
- Monoplacophora
- Polyplacophora (chitons, or sea cradles)
- Scaphopoda (tusk shells)
Nematoda (roundworms)
[edit | edit source]Nematomorpha (horsehair worms)
[edit | edit source]Nemertea (ribbon worms)
[edit | edit source]Onychophora (velvet worms)
[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]References
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