| Noun | 1. | suborder Mysticeti - baleen whales: right whales; rorquals; blue whales; humpbacks animal order - the order of animals Cetacea, order Cetacea - an order of Eutheria baleen whale, whalebone whale - whale with plates of whalebone along the upper jaw for filtering plankton from the water Balaenidae, family Balaenidae - right whales Balaenopteridae, family Balaenopteridae - rorquals; blue whales Eschrichtiidae, family Eschrichtiidae - comprising only the grey whales |