Sensu strico, it can refer to Tubulinea. However, sensu lato, it can also refer more generally to a paraphyletic group of lobose Amoebozoa. Formal classification of lobose amoebae remains speculative, and the older, less specific terms remain in use. In very old textbooks, "Lobosea" is sometimes used to refer to all amoebae, including those clearly established as bikont. In either case, monophyly is not yet determined, but the terminology is still used while the classification continues.