PPT-Crustacea Subphylum of Arthropoda

Mostly Aquatic Two pairs of antennae mandibles pair of appendages on each segment of their body Mollusca Gastropods Snails Single Shell Bivalves Clams 2 Shells Cephalopods Squid and Octopus Internal Shell. Phylum Arthropoda Superclass Crustacea Branchiopoda Superorder Cladocera Onychopoda Cercopagidae Adult Morphology Body length of males (Figs. 1 and 2) can range from 0.8 to 1.6 mm Body length of By: . Zackery. . Zwicker. , Benjamin O’Toole, Katey Murphy, Katie Gallant . Evolutionary origin . Attempts have been made to construct a single hypothetical crustacean ancestor. Such an organism would have to possess: “elongated body, two pairs of appendages in front of the mouth, a pair of mandibles behind the mouth, and numerous trunk segments with appendages that form a continuous series of similar structure” . . Crustacea. Zoe Rolle, . Edrick. . Robichaud. , Hassan . Emran. , . Deniz. . Divinali. Arthropoda. - . Crustacea. Fossil Record and Evolutionary History. Structures – what makes them unique . Life Cycle & behaviour. Molluscs. and Arthropods. Class . Scaphopoda. . (300 species). tooth shells, tusk shells. all . are burrowing marine animals. most distinctive characteristic – conical shell open at both ends. Class . -. Arthropoda. -. (insects, crustaceans, spiders, mites) . Arthropoda. - insects, crustaceans, spiders, mites, . Arthropoda - abundance . Arthropoda. – . Where did they come from?. Peripatus. What about the Onychophora (“velvet worms” )? . -. Arthropoda. –. Insects and Crustaceans. Arthropoda - Crustacea - lobsters, crabs, barnacles. Arthropoda - Crustacea - lobsters, crabs, barnacles. Characteristics -. 1. Head and thorax are fused - cephalothorax. anterior. posterior. Phylum . Chordata. Subphylum . Urochordata. (. Tunicata. ). Subphylum . Cephalochordata. “. Craniata. ” group. Subphylum Vertebrata. Superclass . Agnatha. Superclass . Gnathostomata. (frog). Neurulation animation. (human). Phylum . Chordata. Subphylum . Urochordata. (. Tunicata. ). Subphylum . Cephalochordata. “. Craniata. ” group. Subphylum Vertebrata. Superclass . Agnatha. Class . Scaphopoda. . (300 species). tooth shells, tusk shells. all . are burrowing marine animals. most distinctive characteristic – conical shell open at both ends. Class . Monoplacophora. undivided arched shell. 3. Number of species. Arthropoda. Echinodermata. Ciliophora. Chordata. Mollusca. Platyhelminthes. Nematoda. Porifera. Annelida. Sarcomastigophora. Apicomplex. 4. Characteristics . of Arthropods. Jointed appendages. More species (200,000 ) than any other animal phylum except Arthropoda. Soft body – often protected by CaCO. 3. shell. Unsegmented, typically bilaterally symmetrical. I. Phylum Mollusca. ©2004 Amanda Demopoulos. Arthropoda Classification Phylum Arthropoda Subphylum Uniramia - ( terrrestrial mandibulates ) Class Chilopoda - centipedes Class Diplopoda - millipedes Class Insecta - insects Subphylum Crustacea Phylum . Arthropoda. Arthro. = Joint, . Poda. . = Appendages, feet. Account . for over 80% of all known living . animal. species.. Presence of . metamerism. . (=serial segmentation). Shared characteristic with the . Arthropoda. Subphylum . Trilobita. (extinct). Subphylum . Uniramia. Class . Chilopoda. (centipedes). Class . Diplopoda. (millipedes). Class . Insecta. Order . Orthoptera. (grasshoppers). Subphylum . Chelicerata.