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#Arthropoda#

Arthropods are a large group of animals, including hexapods (insects, etc.), crustaceans (shrimps, crabs, etc.), chelicerates (spiders, scorpions, etc.), and myriapods (centipedes, millipedes, etc.) Exoskeletons and other animals form a taxonomic unit called Arthropoda (scientific name: Arthropoda). Including the well-known shrimps, crabs, mosquitoes, flies, butterflies, spiders, centipedes and extinct trilobites. There are approximately 1.2 million existing species in the world, accounting for
Protozoa Echinodermata Mollusca Platyhelminthes Annelida Coelenterata Arthropoda Nematomorpha Brachiopoda Hemichordata