Superorders are an intermediate classification rank or grouping that sit directly above an order. A superorder may contain several orders. Sharks are a good example of a superorder, grouping together eight living orders of shark, as well as, five extinct orders. Perhaps the most famous superorder of them all is Dinosauria - the dinosaurs!
In biological classification, rank is the level in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, and class. Each rank subsumes under it a number of less general categories. The rank of species, and specification of the genus to which the species belongs is basic, which means that it may not be necessary to specify ranks other than these.