[Snip]
>The results suggest that ecdysis (moulting) arose once and support the
>idea of a new _clade_, Ecdysozoa, containing moulting animals: arthropods,
>tardigrades, onychophorans, nematodes, nematomorphs, kinorhynchs and
>priapulids. No support is found for a clade of segmented animals, the
>Articulata, uniting annelids with arthropods. The hypothesis that
>nematodes are related to arthropods has important implications for
>developmental genetic studies using as model systems the nematode
>Caenorhabditis elegans and the arthropod Drosophila melanogaster, which
>are generally held to be phylogenetically distant from each other.
>-------------------------------------------------------
You use the word clade for this grouping. Did you use cladistics when
analysing this 18S data? What outgroup did you use? Is it a distance
study or a cladistic study?
/L
