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Figure 2 | Frontiers in Zoology

Figure 2

From: Comparative morphology of the axial complex and interdependence of internal organ systems in sea urchins (Echinodermata: Echinoidea)

Figure 2

Current understanding of sea urchin phylogeny. The hypotheses of echinozoan and echinoid relationships are based on multiple sources of morphological and molecular datasets (for further references see the Materials and methods section). This tree has not been generated using a consensus or numerical technique and reflects the views and biases of the authors.

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