Figure 5. A in A taxonomic reassessment of Ichthyosaurus communis and I. intermedius and a revised diagnosis for the genus

Figure 5. A, skull of Ichthyosaurus communis neotype (NHMUK PV R1162); B, interpretive illustration of the neotype; C, skull of SMNS 13111; D, interpretive illustration of SMNS 13111. Abbreviations: a, angular; den, dentary; en, external naris; f, frontal; ju, jugal; la, lacrimal; mx, maxilla; na, nasal; p, parietal; po, postorbital; pmx, premaxilla; pf, postfrontal; prf, prefrontal; q, quadrate; qj, quadratojugal; sq, squamosal; st, supratemporal; su, surangular. Light grey denotes matrix and openings in skull. Dashed lines indicate broken edge and possible sutures. The dorsal skull roof of the neotype is poorly preserved and the extent of the bones should be interpreted with caution as other bones and openings in the skull could not be identified. The parietal in SMNS 13111 is not well preserved and the shape and extent is deformed due to crushing. Scale bars = 5 cm. The scale bar for A is estimated because the specimen is behind glass and is inaccessible for measurement.