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Besanosaurus leptorhynchus referred specimen PIMUZ T 4376, preserved on the same slab as a specimen of the smaller Mixosaurus. Scale bar represents 50 cm (1.6 ft). Figure 3C of Bindellini et al. (2021). References: Bindellini, G.; Wolniewicz, A.S.; Miedema, F.; Scheyer, T.M.; Dal Sasso, C. (2021). "Cranial anatomy of Besanosaurus leptorhynchus Dal Sasso & Pinna, 1996 (Reptilia: Ichthyosauria) from the Middle Triassic Besano Formation of Monte San Giorgio, Italy/Switzerland: Taxonomic and palaeobiological implications". PeerJ 9: e11179. DOI:10.7717/peerj.11179.

Compsognathidae skeletons to scale.

Compsognathidae skeletons to scale.

Compsognathidae skeletons to scale.

Stratigraphy of the Upper Cretaceous Neuquén Group (after Garrido) indicating stratigraphic positions of definitive unenlagiine taxa (modified from Gianechini and Gianechini & Apesteguía). Skeletal reconstructions to approximate scale, redrawn and/or modified from works by Scott Hartman (Buitreraptor gonzalezorum, Austroraptor cabazai), Gabriel Lio (Unenlagia comahuensis, Neuquenraptor argentinus, Unenlagia paynemili), and Jaime Headden (Pamparaptor micros, Diuqin lechiguanae), used with permission

Figure 4 The reconstruction of the skull and lower jaw of the holotype of Darwinopterus camposi sp. nov. (IVPP V 17957). Scale bar: 50 mm. Abbreviations: d, dentary; f, frontal; j, jugal; ltf, lower temporal fenestra; m, maxilla; man.sys, mandibular symphysis; naof, nasoantorbital fenestra; o, orbit; p, parietal; pm, premaxilla; pmcr, premaxillary crest; po, postorbital; prn, nasal process; q, quadrate; sq, squamosal; utf, upper temporal fenestra.

Figure 4 The reconstruction of the skull and lower jaw of the holotype of Darwinopterus camposi sp. nov. (IVPP V 17957). Scale bar: 50 mm. Abbreviations: d, dentary; f, frontal; j, jugal; ltf, lower temporal fenestra; m, maxilla; man.sys, mandibular symphysis; naof, nasoantorbital fenestra; o, orbit; p, parietal; pm, premaxilla; pmcr, premaxillary crest; po, postorbital; prn, nasal process; q, quadrate; sq, squamosal; utf, upper temporal fenestra.

Skeletal reconstruction of Suchomimus tenerensis and Baryonyx walkeri to scale.

Skeletal reconstruction of Suchomimus tenerensis and Baryonyx walkeri to scale.

Targaryendraco wiedenrothi (formerly ‘Ornithocheirus’), holotype SMNS 56628 (Hauterivian, Engelbostel clay pit, Hannover), anterior part of the mandibular symphysis. A dorsal view B respective line drawing C left lateral view D respective line drawing. Abbreviations: d – dentary, sul – sulcus. Arrows and numbers indicate alveoli or teeth and their respective position. Scale bar = 10 mm.

Targaryendraco wiedenrothi (formerly ‘Ornithocheirus’), holotype SMNS 56628 (Hauterivian, Engelbostel clay pit, Hannover), anterior part of the mandibular symphysis. A dorsal view B respective line drawing C left lateral view D respective line drawing. Abbreviations: d – dentary, sul – sulcus. Arrows and numbers indicate alveoli or teeth and their respective position. Scale bar = 10 mm.

Type specimen of Pterodactylus scolopaciceps (BSP AS V 29 a). Scale bar = 20 mm.

CMN 50791, mid-cervical vertebra (C6) of Sigilmassasaurus brevicollis. (A) posterior view; (B) anterior view; (C) ventral view; (D) dorsal view; (E) right lateral view; (F) left lateral view. Abbreviations: cpf, central pneumatic foramen; epi, epipophyses; iprl, interprezygapophyseal lamina; ns, neural spine; poz, postzygapophysis; pp, parapophysis; prz, prezygapophysis; tp, transverse process; vtp, ventral triangular plateau. Scale bar equals 10 cm.

Fig 3. Skeletal map of Keilhauia nui (PMO 222.655) viewed from the side stratigraphically down, i.e. the prepared side. Vertebrae numbers (“x#”) indicate position relative to the anterior end of the preserved skeleton and do not correspond to their actual position in the column. Dashed lines show three faults. Scale bar equals 50 cm. Modified from Delsett et al. 2016.

A more complete specimen of Wapuskanectes betsynichollsae. TMP2012.50.1. (A) Dorsal view of the originally upside down remains recovered from north of the town of Fort McMurray, Alberta. The head and most of the neck were lost when intercepted by a grader during road construction. The right flipper was lost sometime in the Early Cretaceous prior to the final burial of the body. (B) The pelvic and abdominal regions of TMP2012.50.1 showing gastroliths (black arrows) within the body cavity that settled between the ribs of the inverted carcass and hint at a more substantial collection that is hidden inside the body cavity. Scale bars on body regions are 10 cm. Source credit: Sue Sabrowski, Royal Tyrrell Museum of Palaeontology.

Quarry map and reconstruction of PMO 224.248. (A) Drawing from a combination of field and laboratory drawings in ventral view (modified from Delsett et al. (2016)); (B) skeletal reconstruction of PMO 224.248, where red indicates preserved elements. Scale bar equals 50 cm. Drawn by Aubrey Jane Roberts.