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. Author manuscript; available in PMC: 2017 Jul 31.
Published in final edited form as: Nature. 2015 Jan 12;520(7545):82–85. doi: 10.1038/nature14065

Extended Data Figure 5. Subcranial ridges in Janusiscus and early crown gnathostomes.

Extended Data Figure 5

a, Reconstructed tomographs showing that the thickenings along the lateral margins of the sphenoid region of Janusiscus do not represent artefacts of post-mortem compression. b, The ‘acanthodian’ Ptomacanthus anglicus NHMUK PV P 24919a, silicone peel of specimen preserved in negative, dusted with ammonium chloride. Portions of the skull other than the neurocranium partially masked for clarity. c, The chondrichthyan Doliodus problematicus NBMG 10127/1a, reconstruction of neurocranium based on CT data. d, Janusiscus schultzei n. gen et sp. nov. GIT 496-6 [Pi.1384], reconstruction of neurocranium based on CT data. Red arrows in each panel indicate subcranial ridges.