Original: The Ecdysozoa () are a group of protostome animals, including the Arthropoda (insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla.
Simplified: The Ecdysozoa (also called cycloneuralia) are a grouping of protostome animals, including the Arthropoda (including insects and crustaceans), Nematoda, and several smaller phyla.