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> Science > Zoological Sciences > Animal
Morphology
> Table
of Animal Phyla |
| Phylum |
Some |
Number of Known Species |
| Placozoa | Trichoplax adhaerens |
1 |
| Porifera
(sponges) |
Tubular, cuplike, vaselike, sprawling animals |
8,000 |
| Cnidaria
(cnidarians) |
Hydra, jellyfishes, corals, sea anemones |
11,000 |
| Ctenophora
(comb jellies) |
Pleurobrachia |
100 |
| Platyhelminthes
(flatworms) |
Turbellarians, flukes, tapeworms |
15,000 |
| Nemertea
(ribbon worms) |
Soft-bodied animals shaped like ribbons, rubber bands |
800 |
| Nematoda
(roundworms) |
Pinworms, hookworms |
20,000 |
| Rotifera
(rotifers) |
Small animals with a crown of cilia |
1,800 |
| Mollusca
(mollusks) |
Snails, slugs, clams, squids, octopuses |
110,000 |
| Annelida
(annelids) |
Earthworms, leeches, polychaetes |
15,000 |
| Arthropoda
(arthropods) |
Crabs, lobsters, spiders, insects |
1,000,000+ |
| Echinodermata
(echinoderms) |
Sea stars, sea urchins, sea cucumbers |
6,000 |
| Chordata
(chordates) |
Invertebrate chordates: Tunicates, lancelets |
2,100 |
| Vertebrates: | ||
| Fishes |
21,000 |
|
| Amphibians |
3,900 |
|
| Reptiles |
7,000 |
|
| Birds |
8,600 |
|
| Mammals |
4,500. |
|
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