invertebrate notes

Invertebrate Notes
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Invertebrate Phyla: 

Porifera-sponges

Cnidaria:


sea anemone


hydra


Coral


Jellyfish

Platyhelminthes-flatworms


Fluke


Tapeworm

Nematoda-roundworms


Trichinella


Ascaris


Hookworms


Pinworms

Rotifera–rotifers

Annelida-segmented worms


earthworm

leech
Mollusca

clam

snail

octopus
Arthropoda
Subphylum: Trilobita–trilobites (extinct) Subphylum: Chelicerata-horseshoe crabs, spiders, scorpions, mites, & ticks Subphylum: Mandibulata–crustaceans, insects, millipedes, centipedes

Trilobite

Horseshoe crab

Millipede
Echinodermata: starfish, sea cucumbers, sea lilies

Starfish

Sea Cucumber

Sea Lily

 

About 97% of all animals are invertebrates.  Invertebrates are animals which do not have a backbone.  There are nine phyla of  invertebrates:  Porifera, Cnidaria, Platyhelminthes, Nematoda, Rotifera, Mollusca, Annelida, Arthropoda, & Echinodermata. 

Sponges