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Figure 3 in The southernmost occurrence of Ichthyosaurus from the Sinemurian of Portugal

Figure 3. Ichthyosaurus cf. communis (IST-MDT 85), humerus in dorsal (a) and ventral (b) view. from Praia de Nossa Senhora da Victória, Sªo Pedro de Moel. ad – depression in the articular face; dt – dorsal trochanter. Bar marks 2 cm.

Figure 2 in The southernmost occurrence of Ichthyosaurus from the Sinemurian of Portugal

Figure 2. Ichthyosaurus cf. communis (IST-MDT 85), anterior left limb in dorsal (a) and ventral (b) view, from Praia de Nossa Senhora da Victória, Sªo Pedro de Moel. H – humerus; R – radius; U – ulna; r – radial; u – ulnar; i – intermedium; a.d – accessory digit; bi – digital bifurcation; 2–4 – distal carpals; ii–v – metacarpals. Bar marks 2 cm.

Figure 5 in The southernmost occurrence of Ichthyosaurus from the Sinemurian of Portugal

Figure 5. Distribution of Ichthyosaurus sites in the Early Jurassic (the site indicated by arrow is Alberta, Canada), modified from Price et al. (2016).

Figure 1 in The southernmost occurrence of Ichthyosaurus from the Sinemurian of Portugal

Figure 1. The documented localities where ichthyosaur fossils have been uncovered, within the Lusitanian Basin (locations along the coast are Early Jurassic). Adapted from Blanco (1995).

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Fig. 4 in On the largest Ichthyosaurus: A new specimen of Ichthyosaurus somersetensis containing an embryo

Fig. 4. Right forefin of Ichthyosaurus somersetensis Lomax and Massare, 2017 (NLMH 106234) from the Lower Jurassic (lower Hettangian) of Doniford Bay, Watchet, Somerset, UK; in dorsal view (anterior to the right). Grey indicates plaster filler (elements are not genuine); black indicates crushed and displaced portion of humerus. Arrow points to bifurcation. Photograph (A), explanatory drawing (B).

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Fig. 7 in On the largest Ichthyosaurus: A new specimen of Ichthyosaurus somersetensis containing an embryo

Fig. 7. Embryo of Ichthyosaurus somersetensis Lomax and Massare, 2017 (NLMH 106234) from the Lower Jurassic (lower Hettangian) of Doniford Bay, Watchet, Somerset, UK. A. Articulated vertebral column, isolated forefin, probable scapula (white arrow), ribs, and isolated centra. B. Close-up of the forefin. Arrows point to probable notching of the?radiale,?distal carpal, and?metacarpal.

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Fig. 5 in On the largest Ichthyosaurus: A new specimen of Ichthyosaurus somersetensis containing an embryo

Fig. 5. Close-up of some mid-posterior dorsal vertebrae of Ichthyosaurus somersetensis Lomax and Massare, 2017 (NLMH 106234) from the Lower Jurassic (lower Hettangian) of Doniford Bay, Watchet, Somerset, UK; showing the unusual V-shape morphology of the neural spine apices. Note, the second, third, and fourth neural spine from the left are mostly reconstructed and the morphology is not genuine.

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Figure 4 in The southernmost occurrence of Ichthyosaurus from the Sinemurian of Portugal

Figure 4. Reduced consensus tree of IST-MDT 85, I. cf. communis, after the matrix by Moon (2019).

Figure 4 in A taxonomic reassessment of Ichthyosaurus communis and I. intermedius and a revised diagnosis for the genus

Figure 4. Examples of forefin morphology of Ichthyosaurus. A, CAMSM J35183 from Somerset, an example of what a 'typical' fin from Somerset looks like; B, CHMUS 2015.0102 possibly from Lyme Regis, an example of a wide, five-digit forefin; C, AGC 11 from Somerset, an example of a narrow, five digit forefin; D, YORYM 2006-3803 from Lyme Regis, an example of a narrow, six digit forefin. Specimens B–D are exceptionally complete. The arrows indicate the point at which specimens from Somerset (such as A) are usually considered to be complete. Scale bars = 5 cm.

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.

Figure 3. A in A taxonomic reassessment of Ichthyosaurus communis and I. intermedius and a revised diagnosis for the genus

Figure 3. A, original figure by Conybeare (1822, pl. 16, fig. 8) of a specimen referred to as Ichthyosaurus communis. B, holotype specimen of I. breviceps (NHMUK PV OR43006) with lines indicating key sutures of the skull; the skull has been reversed to show the same orientation; note the similar extent of the subnarial process of the premaxilla and the reduced anterior process of the lacrimal; the medial portion of the lacrimal is damaged, and the dorsal extent is estimated. Abbreviations: en, external naris; la, lacrimal; mx, maxilla; na, nasal; pmx, premaxilla. Scale: A, no size information in the original publication, B, specimen behind glass and inaccessible, so scale bars cannot be provided.

Figure 2. A in A taxonomic reassessment of Ichthyosaurus communis and I. intermedius and a revised diagnosis for the genus

Figure 2. A, type skull of Ichthyosaurus intermedius as figured by Conybeare (1822, pl. 17); B, interpretive skull illustration of the neotype of I. communis (NHMUK PV R1162), reversed to show the same orientation; the dorsal skull roof of the neotype is poorly preserved due to crushing, so sutures and openings in the skull could not be determined with certainty; C, postcranial skeleton of the type specimen (A) of I. intermedius as figured by Home (1819b). 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 or openings in skull. Dashed lines indicate broken edge and possible sutures. Scale: A, C, no size information given in the original publications, B, specimen behind glass and inaccessible, so scale bars cannot be provided.

Figure 1 in A taxonomic reassessment of Ichthyosaurus communis and I. intermedius and a revised diagnosis for the genus

Figure 1. Original figures of teeth of A, Ichthyosaurus communis (Conybeare, 1822, pl. 15, fig. 8); and B, I. intermedius (Conybeare, 1822, pl. 15, fig. 9). No size information given in the original publication, so a scale bar cannot be provided.