Figure 1 | Heredity

Figure 1

From: The active evolutionary lives of echinoderm larvae

Figure 1

An 18S rDNA consensus metazoan phylogenetic tree with developmental modes mapped. Indirect development present (black branches), direct development present (white branches). Not all phyla shown, and some major super phylum clades are bundled, eg Ecdysozoa, Lophotrochozoa. The tree is consistent with direct development as basal, and indirect-developing larvae arising independently in at least three clades. From Sly et al (2003).

Back to article page