Transcript of Anthropoda!
Anthropoda! Phylum Arthropoda!! Animals that show metamerism with tagmatization, a jointed exoskeleton, and a ventral nervous system. Subphylum Trilobitomorpha! Marine, all extinct; lived from Cambrian to Carboniferous periods; bodies divided into three longitudinal lobes; lobes; heads. thorax, and abdomen present; one pairof antennae and biramous appendages. Subphylum Chelicerata!! BOdy usually divided into prosoma and opisthosoma; first pair of appendages piercing or pincerlike (chelicerae) and used for feeding. Class Merostomata! Marine, with book gills on opisthosoma. Two subclasses: Eurypterida, a group of extinct athropods called giant water scorpions, and Xiphosura, the horseshoe crabs. Limulus. Class Arachnida! Mostly terrestrial, with book lungs, tracheae, or both; usually four pairs of walking legs in adults. Spiders, scorpions, ticks, mites, harvestmen, and others. Class Pycnogonida! Reduced abdomen; no special respiratory or excretory stuctures; four to six pairs o walking legs; common in all oceans. Sea spiders. Subphylum Crustacea! Most aquatic, head with two pairs of antennae, one pair of mandibles, and two pairs of maxillae; biramous appendages. Class Remipedia! cave-dwelling cusaceans from the Caribbean basin, Indian ocean, Canary Islands, and Australia; body with approximately 30 segments that bear unifom, biramous appendages. Class Cephalocarida! Small marine crustaceans with uniform, leaflike, tritamous appendages. Class Branchiopoda! Flattened, leaflike appendages used in respiration, filter feeding, and locomotion, found mostly in freshwater. Fairy shrimp, brine shrimp, clam shrimp, water fleas. Class Malacostraca! Appendages possibly modified for crawling, feeding, swimming. Lobsters, crayfish, crabs, shrimp, isopods. Class Maxillopoda! five head, six thoraic, and four abdominal somites plus a abdominal somites plus a telson; thoracic segments variously fused with the head; abdominl segments lack typical appenages; abdomen often rduced. Barnacles and copepods. Subphylum Hexapoda! Body divided into head, thorax, and abdomen; five pairs of head appendages; three pairs of uniramous appenages on the thorax. insects and their relatives. Subphylum Myriapoda! body divided into head ad trunk; four pairs of head appendages; uniramous appendage. Millipedes and centipedes.Full transcript