A reinterpretation of animal phylogeny (differing from morphologically based phylogeny) that was made possible by molecular techniques, was:

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Molecular techniques have allowed for a more nuanced understanding of animal phylogeny, leading to the designation of Ecdysozoa (organisms that molt their exoskeleton) and Lophotrochozoa (organisms that have a trochophore larva or a lophophore feeding structure) as distinct clades, which was a significant departure from classifications based purely on morphology.

A Reinterpretation of Animal Phylogeny (Differing from Morphologically Based Phylogeny)