Arthropoda From CreationWiki, the encyclopedia of creation science Jump to: navigation search Arthropoda Scientific Classification Animalia Phylum: Arthropoda Classes Subphylum: Chelicerata (Horseshoe crabs) Pycnogonida (sea spiders) Arachnida (spiders, ticks, mites) Subphylum: Crustacea (lobsters, krill, crabs, shrimp, etc.) Remipedia Cephalocarida Branchiopoda (fairy shrimp, water fleas, etc.) Maxillopoda (ostracods, copepods, barnacles) Subphylum: Uniramia (insects) Chilopoda (centipedes) Diplopoda (millipedes) The Phylum Arthropoda is the largest group of animals on earth , comprising over 80% of the world's known organisms with over a million modern species described. Arthropods live in almost every habitat on earth , common throughout marine, freshwater, terrestrial, and even aerial environments. They are also ecologically diverse predators herbivores , and there are even symbiotic and parasitic forms. Despite this unbelievable diversity, the basic body plan of arthropods is fairly constant. Arthropods all share the following in common: body segmentation, a hard exoskeleton (external skeleton), and jointed appendages. They include the crustaceans arachnids insects , and centipedes Contents Anatomy The Japanese spider crab is the largest known arthropod. | |
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