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ede12021-0001-sm-SupFig-S1.pdf97KFigure S1. Absence of multicuspid teeth in the ancestry of the zebrafish. The presence of unicuspid and/or multicuspid teeth in actinopterygian fishes (Table S1) was mapped on a phylogeny of the group that follows Figs. 1 and S2 of Near et al. (2012). This phylogeny is completely resolved, in contrast to that in Fig. 1, which is based on Nelson (2006). Most of the inconsistencies between the phylogenies of Near et al. (2012) and Nelson (2006) involve the relationship and composition of orders in the Neoteleostei; this group has therefore been included as a single taxon. Its composition differs from that described by Nelson (2006) in the removal of the Stomiiformes. Additional differences in membership within terminal taxa illustrated and the phylogeny of Nelson (2006) are the inclusion of the Saccopharyngiformes within the Anguilliformes, the removal of alepocephaloids from the Argentiniformes and the removal of Lepidogalaxias salamandroides and other galaxiids from the Osmeriformes. The presence of unicuspid teeth is indicated by white shading and of multicuspid teeth by black shading; branches with both black and white indicate presence of both character states. While the Cypriniformes are coded as possessing unicuspid and multicuspid teeth, the analyses of Pasco-Viel and colleagues (2010) suggest that unicuspid is the ancestral character state. The zebrafish (a member of the order Cypriniformes with unicuspid teeth) is therefore supported by the illustrated analysis as having only unicuspid teeth in its ancestry.
ede12021-0002-sm-SupTab-S1.pdf13KTable S1. Distribution of multicuspid teeth in ray-finned fishes.
ede12021-0003-sm-SupRef-S1.pdf31KSupporting References.

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