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Fig. 3 | BMC Evolutionary Biology

Fig. 3

From: On trends and patterns in macroevolution: Williston’s law and the branchiostegal series of extant and extinct osteichthyans

Fig. 3

Phylogenetic distribution of mean branchiostegal ray numbers (left), and histograms of the species mean and range of branchiostegal numbers (right). The nodal ancestral values were reconstructed under the EB model, and interpolated along branches using the contMap function of the R package phytools v. 0.6 [63, 64]. Branch lengths are proportional to time. The silhouettes show the approximate position of selected clades. The age of the root is 443 Ma. Note that the intraspecific variation in the number of branchiostegals is probably underreported

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BMC Ecology and Evolution

ISSN: 2730-7182

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