Molecular techniques like DNA sequencing led to a

Last updated: 7/7/2022

Molecular techniques like DNA sequencing led to a restructuring of morphologically-based taxonomy and phylogeny such that rotifers and nematodes were designated as closely related. annelids and arthropods were designated as closely related. Bilateria was designated as a monophyletic group. Ecdysozoa and Lophotrochozoa were designated as clades. echinoderms and chordates were placed in entirely different clades.