Chordata
Fish, mammals, reptiles, birds
more |
Brachiopoda
Lamp shells
more
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Annelida
Typical worms
more at MESA |
Arthropoda
Insects, crustaceans
more
more at MESA |
![](images/chordata.jpg) |
![](images/Brachiopoda.jpg) |
![](images/Annelida.jpg) |
![](images/Arthropda.jpg) |
Echinodermata
Sea stars, sea cucumbers, sea urchins |
Chaetognatha
arrow worms
more at MESA |
Ectoprocta
Bryozoans
more at MESA |
Hemichordata
Acorn worms
more at MESA |
![](images/Echino.jpg) |
![](images/Chaetognatha.jpg) |
![](images/Bryozoa.jpg) |
![](images/Hemichordata.jpg) |
Echiura
Spoon worms more at MESA
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Entoprocta
Sessile, ciliated organisms
more
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Tardigrada
Water bears
more |
Phoronida
Tube worms
more at MESA |
![](images/Echiura.jpg) |
![](images/Entoprocta.jpg) |
![](images/Tardigrada.jpg) |
![](images/Phoronida.jpg) |
Sipuncula
Peanut worms
more at MESA
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Vestimentifera
Beard worms, tube worms more
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Mollusca
Snails, clams, squids, octopuses |
Gnathostomulida
Ciliated jaw worms
more |
![](images/Sipuncula.jpg) |
![](images/Vestimentifera.jpg) |
![](images/Mollusca.jpg) |
![](images/Gnathostomulida.jpg) |
Loricifera
Microscopic marine sediment-dwelling animals
more
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Priapulida
Priapulid worms
more
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Kinorhyncha
Small marine invertebrates more
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Acanthocephala
Parasitic worms
more |
![](images/Loricifera.jpg) |
![](images/Priapulida.jpg) |
![](images/Kinorhyncha.jpg) |
![](images/Acanthocephala.jpg) |
Rotifera rotifers |
Nematomorpha horsehair worms |
Nematoda
nematodes, roundworms |
Gastrotricha
gastrotrichs |
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Nemertea
Ribbon worms more at MESA
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Mesozoa
Tiny parasites
more |
Platyhelminthes
Flatworms more
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Ctenophora
comb jellies, sea walnuts
more at MESA |
![](images/Nemertea.jpg) |
![](images/Mesozoa.jpg) |
![](images/Platyhelminthes.jpg) |
![](images/Ctenophora.jpg) |
Cnidaria
Jellyfish, coral, anemones more at MESA
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Porifera
Sponges
more at MESA
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Placozoa
Very simple amoeba-like animal with only one species in phylum
more
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![](images/Cnidaria.jpg) |
![](images/Porifera.jpg) |
![](images/Placozoa.jpg) |
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