Recent research has found older relationships need to reviewed. The following is

Question

Recent research has found older relationships need to reviewed. The following is a table provides information to the synonymy of echiura and spicuncula into the allelida. Given the information below what would you conclude, would you agree or disagree, what evidence would you want to support this new taxonomy?

Summary of distinguishing features Recently merged into Annelida Echiural9 Closely related Similar-looking phyla Sipuncula Only in a few Yes, except in no no no Repetition of internal organs Septa between In primitive In most species no No No No Cuticle material (161 Generally no but some polychaetes moit their jaws, and leeches moit their skins24 Coelom; but this is reduced or missing in many leeches and some 2 coelomata, main and in 2 coelomata, main and in Coelom only in Body cavity Open outflow, return via branched vein Circulatory system Closed in most species

Explanation / Answer

According to the given data, it cannot be accepted that the Echiura and Sipuncula fall under the phylum Annelida. This is because except the cuticle material most of the features are not matching. The information regarding percentage of similarity of genetic material or the number of homologous functions may help to accept the new taxonomy.

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