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. 2012 Jul 11;7(7):e39370. doi: 10.1371/journal.pone.0039370

Figure 5. Variation in the shape of the frontal bones in basal neopterygians. A.

Figure 5

, frontal bones distinctly broader posteriorly, but long and narrow anteriorly; redrawn from [62], fig. 147: restoration of a Callovian species of †Leptolepis (Teleostei) based on isolated bones. B, Broad antorbital portion of frontal; line drawing of the frontals in †Lepidotes laevis MNHN-CRN 61. C, Antorbital portion of frontal tapering gradually; line drawing of the frontals in †Lepidotes minor NHMUK PV P.1118. D, Tubular antorbital portion of frontal; redrawn from [39], fig. 23: line drawing of the frontals in †Propterus elongatus BSPG 1964-23-145. Drawn to the same size for comparison.