The recent scheme by Adl et al. ( 2005 ) does not recognize formal ranks ( phylum , class , etc . ) .
The recent scheme by Adl et al. ( 2005 ) does not instead treats groups as clades of phylogenetically related organisms .
The recent scheme by Adl et al. ( 2005 ) does not recognize formal ranks ( phylum , class , etc . ) and instead treats groups as clades of phylogenetically related organisms .