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Figure 1. A in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 1. A, Pietraroiasuchus ormezzanoi from the Lower Albian of Pietraroia Plattenkalk (specimen PC-1). B, illustration of the skeleton based on photographs of the specimen and drawn using Adobe Illustrator. Fractures have been filled in grey. Fracture 1 is original; fracture 2 is a broken area that fits perfectly in the specimen, so the centrum on both sides of the fracture is the same element. Scale bar = 150 mm. Ant, anterior; post, posterior. The cartilaginous sternal ribs are depicted in light grey. Thoracic vertebrae 1–10.

Figure 4 in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 4. Skull of Pietraroiasuchus ormezzanoi from the Lower Albian of Pietraroia (specimen PC-2). A, photograph. B, illustration of the skull based on photographs of the specimen and drawn using Adobe Illustrator.

Figure 8 in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 8. Axial column of Pietraroiasuchus ormezzanoi. A, biconvex first caudal. B, lumbar vertebrae. C, thoracic vertebrae. Scale bar is in centimetres.

Figure 5 in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 5. Photograph and interpretation of quadrate and quadratojugal in Pietraroiasuchus ormezzanoi.

Figure 9. A in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 9. A, anterior appendicular skeleton and pectoral girdle, composite figure photograph, and illustration of Pietraroiasuchus ormezzanoi. Coracoid is in internal view; humerus in ventral aspect; and scapula in internal view and note that its posterior edge is rectilinear. B, posterior appendicular skeleton and pelvic girdle, composite photograph and illustration.

Figure 11 in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 11. Ventral osteoderms of Pietraroiasuchus ormezzanoi, specimen PC-1. The arrow points cranially.

Figure 3 in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 3. Photograph of Pietraroiasuchus ormezzanoi (Lower Albian of Pietraroia Plattenkalk, Italy) specimen PC-2 exposed in dorsal aspect. The illustration of the skeleton is based on photographs of the specimen and drawn using Adobe Illustrator. 1, 2, and 3, ribs; I–VIII, osteoderms of the dorsal armour.

Figure 7. Composite figure with a in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 7. Composite figure with a mounted photograph of the mandible and illustration of Pietraroiasuchus ormezzanoi.

Figure 12 in Early eusuchia crocodylomorpha from the vertebrate-rich Plattenkalk of Pietraroia (Lower Albian, southern Apennines, Italy)

Figure 12. Schematic drawing of surangular and jugal of Pachycheilosuchus trinquei from the Albian of the Glen Rose Formation (Texas). A, surangular in dorsal aspect (SMU#75299) and below, surangular in lateral aspect (SMU#75899). Cupped surface in grey. Note in lateral view, in grey a depressed area below a longitudinal crest. B, jugal in lateral and in medial aspects. Jugal proportions do not correspond to any particular specimen: the figure is a composite based on two specimens.

Figure 12 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 12. Maps showing the distribution of titanosauriforms: (A) Late Jurassic, (B) Early Cretaceous, and (C) Late Cretaceous. Key: grey circles, non-titanosaur titanosauriforms; black triangles, titanosaurs; white hexagons, putative titanosaurs. See Table 7 for details. Images were produced in ArcGIS 9.2, and palaeomap reconstructions are from Scotese (2001) (note that the palaeomaps consist of the reconstructed positions of present-day continental coastlines). Modern day co-ordinates for titanosauriform taxa were converted to palaeolatitudes and palaeolongitudes (for the relevant time slices) using PointTracker (Scotese 2004).

Figure 10 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 10. Andesaurus delgadoi. Photographs of metacarpals: right metacarpal I (Mc I) in (A) dorsal, (B) distal, and (C) ventral view; left metacarpal V (Mc V) in (D) dorsal, (E) ventral, and (F) proximal view. In each of the images in dorsal and ventral view, the proximal end of the metacarpal is at the bottom of the image. In the distal and proximal-end images, the dorsal surface is at the top of the image. Scale bar: 100 mm.

Figure 11 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 11. Andesaurus delgadoi: photographs of left pubis and left ischium in lateral view. Scale bar: 400 mm.

Figure 8 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 8. Andesaurus delgadoi. Photographs of chevrons: (A) chevron 1 (C1) in anterior and right lateral view; (B) chevron 2 (C2) in anterior and left lateral view; (C) chevron 3 (C3) in anterior and left lateral view; (D) chevron 4 (C4) in posterior and left lateral view. Scale bar: 200 mm.

Figure 7 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 7. Andesaurus delgadoi. Photographs of middle-posterior caudal vertebrae: (A) Cd23 in left lateral view; (B) Cd24 in left lateral view; Cd25 in (C) anterior, (D) right lateral, and (E) posterior view. Scale bar: 100 mm.

Figure 6 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 6. Andesaurus delgadoi. Photographs of anterior–middle caudal vertebrae: (A) Cd10 and Cd11 in left lateral view; (B) Cd12 in left lateral view; (C) Cd13 in left lateral view; (D) Cd15 in left lateral view; (E) Cd18 in left lateral view; (F) Cd19 in left lateral view; Cd20 in (G) anterior, (H) left lateral, and (I) posterior view. Abbreviations: cb, circular bulge; nc ridge, neurocentral ridge. Scale bar: 100 mm.

Figure 5 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 5. Andesaurus delgadoi. Photographs of caudal vertebra 8 (Cd8) in (A) anterior, (B) dorsal, (C) posterior, (D) left lateral, and (E) right lateral view. Abbreviations: POSL, postspinal lamina; PRSL, prespinal lamina; SPOL, spinopostzygapophyseal lamina; SPRL, spinoprezygapophyseal lamina; VCON, ventral concavity; VLR, ventrolateral ridge. Scale bar: 100 mm.

Figure 3 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 3. Andesaurus delgadoi. Photographs of first caudal vertebra (Cd1) in (A) anterior, (B) posterior, (C) left lateral, and (D) dorsal (anterior surface at top of image) view. Scale bar: 100 mm.

Figure 2 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 2. Andesaurus delgadoi. Photographs of dorsal vertebrae (Dv2) in (A) anterior, (B) right lateral, and (C) posterior view; (D) Dv3–Dv4 in right lateral view. Note that (C) is from a slightly oblique view because the vertebra is still in its field jacket, and so cannot be examined fully perpendicularly. Abbreviations: AL, accessory lamina; CPOL, centropostzygapophyseal lamina; CPRL, centroprezygapophyseal lamina; HYP, hyposphene; LFOR, lateral foramen; LFOS, lateral fossa; PCDL, posterior centrodiapophyseal lamina; PCPL, posterior centroparapophyseal lamina; PODL, postzygodiapophyseal lamina; POSL, postspinal lamina; PPF, postparapophyseal fossa; PRDL, prezygodiapophyseal lamina; PRSL, prespinal lamina; SPDL, spinodiapophyseal lamina; SPOL, spinopostzygapophyseal lamina; SPRL, spinoprezygapophyseal lamina. Scale bar: 200 mm.

Figure 1 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 1. Map showing the El Chocón locality where the holotype of Andesaurus delgadoi was discovered (marked with a star). Inset map A shows the position of Neuquén Province within Argentina, and map B shows Neuquén Province. The black box within map B represents the area displayed in the main map (figures modified from Calvo, 1999).

Figure 4 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics

Figure 4. Andesaurus delgadoi. Photographs of anterior caudal vertebrae: (A) Cd2 in right lateral view; Cd3 in (B) left lateral, (C) dorsal, (D) anterior, (E) posterior, and (F) ventral views; vf, vascular foramen. Scale bar: 100 mm.