Published by admin at August 21, 2023 SUB-PHYLA: Trilobitomorpha: Myriapoda: Cheliceriformes: Crustacea: Hexapoda: Trilobites (extinct) Centipedes Spiders, scorpions Crustaceans Insects ~1,000,000 species so far… Compound eye with many facets spiracles Insects decouple gas […]