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Phylum Mollusca
110 thousand species
(Clam dissect), they have gills
Cephalopods (notable features)
Phylum Arthropoda
Jointed appendages
Exoskeleton present
Gas exchange respiratory system
Open respiratory system
Insects, crustations shell fish
Phylum chordata
Rat dissection
Fish, amphibians reptiles birds & mammals.
Lancelet, cartilaginous fish, Sting Ray
Everything they need to survive it's at the front of their bodies. Extreme segmentation.
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