Taxonomy

Phylum Porifera

sponges

Phylum Ctenophora

Comb jellies

Phylum Cnidaria

hydrozoa, scyphozoa, cubozoa, anthozoa

Class Hydrozoa

hydras and portuguese man-of-war

Class Scyphozoa

jellyfish and sea nettles

Class Cubozoa

box jellies and sea wasps

Class Anthozoa

sea anemone, most corals, sea fans

Phylum Playhelminthes

flatworms

Classes of Flatworms

Turbellaria, Monogenaea, Trematoda, Cestoda

Class Turbellaria

free-living flatworms, Planaria

Class Monogenaea

primarily ectoparasites of fish

Class Trematoda

trematodes, blood flukes

Class Cestoda

tapeworms, beef and pork

Phylum Ectoprocta

bryozoans or moss animals

Phylum Brachiopoda

lamp shells

Phylum Nemertea

ribbon worms

Phylum Annelida

segmented worms

Classes of Segmented Worms

Oligochaeta, Polychaeta, Hirudinea

Class Oligochaeta

earthworms

Class Polychaeta

polychaeata

Class Hirudinea

leeches

Phylum Mollusca

Polyplacophora, Bivalvia, Gastropoda, Cephalopoda

Class Polyplacophora

Chitons

Class Bivalvia

clams, oysters, scallops, mussels

Class Gastropoda

abalone, limpet, conch, nudibranchs, snails, slugs

Class Cephalopoda

squid, octopus, nautilus, cuttlefish

Phylum Nematoda

roundworms and heartworms

Phylum Arthropoda

Trilobita, Cheliceriformes, Myriapoda, Crustacea, Hexapoda

Subphylum Trilobita

trilobites

Subphylum Myriapoda

millipedes, centipedes

Subphylum Crustacea

lobsters, crabs, barnacles, amphipods, isopods

Subphylum Hexapoda

insects

Phylum Echinodermata

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, Holothuroidea

Class Asteroidea

sea stars

Class Ophiuroidea

brittle stars

Class Echinoidea

sea urchins, sand dollars

Class Crinoidea

sea lilies, feather stars

Class Holothuroidea

Sea cucumbers

Phylum Chordata subphylums

Urochordata, Cephalochordata, Vertebrata

Subphylum Urochordata

tunicates or sea squirts

Subphylum Cephalochordata

lancelets

Subphylum Vertebrata

Cyclostomata, Gnathostomes, Osteichthyes, Tetrapoda, Amniota

Cyclostomata

jawless vertebrates

Class Myxini

hagfish

Class Petromyzontida

lamprey

Gnathostomes

Jawed Vertebratesq

Class Chondrichthyes

sharks, rays and chimaeras

Osteichthyes

boney fishes

Class Actinopterygii

ray-finned fishes

Class Actinistia

Coelacanths

Class Dipnoi

lungfish

Tetrapoda

four-limbed vertebrates

Class Amphibia

salamanders, frogs, caecilians

Amniota

vertebrates with amniotic eggs

Class Reptilia

urtles, crocs, dinosaurs, birds, tuatara, squamates

Class Mammalia

monotremes, marsupials, eutherians