Arthropod groups
Major arthropod classes.
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(((Insects:400,Crustaceans:430):20,Myriapods:440):20,(Arachnids:440,(Spiders:300,Scorpions:300):140):20);Major arthropod classes.
(((Insects:400,Crustaceans:430):20,Myriapods:440):20,(Arachnids:440,(Spiders:300,Scorpions:300):140):20);