Figure 1From: Left-right asymmetric expression of dpp in the mantle of gastropods correlates with asymmetric shell coilingPhylogeny of the Gastropoda and major shell shapes in each group. The phylogeny is based on the studies of Ponder et al. [1] and Aktipis et al. [2]. Red boxes indicate coiled shell and blue boxes indicate non-coiled shell. Dagger symbols indicate extinct taxa. Illustration of Paragastropoda is from Knight et al. [3].Back to article page