Traditional animal phylogenetic trees and the most recent molecular phylogenetic trees have many similarities.Which is a feature of the recent trees that was not present in the traditional phylogeny?
A) the status of sponges as the first group to diverge from the other animals
B) the grouping of nematodes and arthropods into a clade called the Ecdysozoa
C) the grouping of all bilaterally symmetric animals within a single clade
D) the placement of Echinodermata and Chordata together in a clade of deuterostomes
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