CARDIOVASCULAR SYSTEMS
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David's Phylums
Phylum Mollusca
>
Octopus
Apple Snail
Common Clam
Phylum Annelida
>
Earth Worm
Clam Worm
Tube Worm
Phylum Anthropoda
>
Horseshoe Crab
Lobster
Grasshopper
Sean's Phylums
Phylum Chordata
>
Humans
Blue Whales
Bears
Phylum Echinodermata
>
Starfish
Sand Dollar
Sea Cucumber
Phylum Porifera
Kraig's Phylums
Phylum Cnidaria
>
Jellyfish
Sea Anemones
Corals
Phylum Platyhelminthes
>
Flatworms
Tapeworms
Flukes
Phylum Nematoda
>
Loa Loa Worms
Heartworms
Pinworms
All species in the phylum
Chordata
have a spinal cord, but not necessarily a spine itself. Most people think of Chordates when they think of animals, but Chordates do not make up the largest phylum.