|Classification of Wesen|
|(bony fishes) (cartilaginous fishes) (birds and reptiles) (mammals) (spiders and allies) (insects) (worms and allies)|
Protostomes (PROH-toh-stohmz) are lower-level animals that are still symmetrical down the middle. These include things like mollusks, arachnids, and insects. These also include the assymetrical fiddler crabs. The term Protostome literally means 'mouth first'.
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