sauropodomorpha: gigantic herbivorous dinosaurs having huge bodies with long necks and small heads: Prosauropoda and Sauropoda (apatosaurus, diplodocus and titanosaurs)
animal order: the order of animals
beta receptor: receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)