{"thcode":2,"term":{"code":220,"name":"crustaceans","parent":58,"scope":"Arthropods of class Crustacea, such as crabs, lobsters, shrimp, prawns, or barnacles, with hard shells (exoskeleton) and segmented bodies with pairs of jointed appendages."},"uf":[],"bt":[{"code":58,"name":"arthropods","parent":606,"scope":"Invertebrates belonging to the largest phylum of animals, Arthropoda, with an exoskeleton, segmented bodies, and jointed appendages, including many subphyla and classes, such as insects, crustaceans, horseshoe crabs, sea spiders, centipedes, millipedes, and the extinct trilobites."},{"code":606,"name":"invertebrates","parent":45,"scope":"Animals having no backbone or spinal column, such as insects, mollusks, crustaceans, worms, and similar organisms."},{"code":45,"name":"animals","parent":843,"scope":"Multi-celled organisms of the kingdom Animalia with eukaryotic cells (cells with distinct nuclei containing genetic material and bounded by thin membranes) that are heterotrophic (obtaining energy from organic substances produced by other organisms)."},{"code":843,"name":"organisms","parent":1174,"scope":"Living individuals that grow, reproduce, and die."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":848,"name":"ostracodes","parent":220,"scope":"Small aquatic crustaceans belonging to the subclass Ostracoda, characterized by a bivalve shell."}],"rt":[{"code":605,"name":"invertebrate zoology","parent":1339,"scope":"Branch of biology dealing with animals having no backbones or spinal columns."},{"code":1056,"name":"shellfish","parent":841,"scope":"Aquatic invertebrates with shells, usually mollusks and crustaceans. Includes clams, lobsters, and oysters."}]}