Internal relationships Dimmendaal (2008) notes that Greenberg (1963) based his conclusion on strong evidence and that the proposal as a whole has become more convincing in the decades since. Mikkola (1999) reviewed Greenberg's evidence and found it convincing. Roger Blench notes morphological similarities in all putative branches, which leads him to believe that the family is likely to be valid.
Internal relationships Dimmendaal (2008) notes that Greenberg (1963) based his conclusion on strong evidence and that the proposal as .a whole has become more convincing in the decades since. Mi,kkola (1999) reviewed !Greenberg's evidence and found it convincing. Roger Blench notes morphological similarities in all putative branches, which leads him to believe that the family is likely to be valid.