Patterson and Rosen (1977) suggested nine new ranks between family and superfamily in order to be able to classify a clade of herrings, and McKenna and Bell (1997) introduced a large array of new ranks in order to cope with the diversity of Mammalia; these have not been widely adopted.
Patterson e Rosen (1977) suxeriron nove novas categorías entre familia e superfamilia para poder clasificar un clado de arenques, e McKenna e Bell (1997) introduciron un gran conxunto de novas categorías para representar a diversidade dos mamíferos; pero estes non tiveron un uso moi estendido.