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Fig. 1 in A new centrosaurine from the Late Cretaceous of Alberta, Canada, and the evolution of parietal ornamentation in horned dinosaurs

Fig. 1. Map showing the presumed location of the Spinops sternbergorum gen. et sp. nov. type locality within the area informally called the "Steveville badlands," Dinosaur Provincial Park, Alberta Canada. Charles Sternberg (unpublished data in NHMUK archives) indicated that the bone bed was one mile below the mouth of Berry Creek, and the estimated area that this covers is indicated by the grey semi−circle. Intense prospecting on the east side of the river has failed to relocate the quarry, and badlands on the west side are outside of the Park boundary and currently inaccessible for prospecting. The indicated southeast Park boundary does not include the margins of two major coulees in this region that are also within the Park. Note that the quarry for the holotype of Styracosaurus albertensis Lambe, 1913 (CMN 344) is in the southeast part of the Park. The inset photograph, courtesy of David Eberth, shows a typical view of the contact between the Dinosaur Park Formation (DPF) and Oldman Formation (OF) near the Steveville badlands.

Fig. 6 in First evidence of a mamenchisaurid dinosaur from the Upper Jurassic-Lower Cretaceous Phu Kradung Formation of Thailand

Fig. 6. Teeth of mamenchisaurids and the titanosauriform Euhelopus zdanskyi. A–C. Mamenchisauridae indet. A teeth (SM MD3−53, −62, −54, respectively) from Dan Luang, Mukdahan Province, northeastern Thailand, Phu Kradung Formation, Late Jurassic–Early Cretaceous, in cast showing a lingual boss (A1–C1), and in lingual (A2–C2), labial (A3–C3), distal (C4), mesial (C5), dorsal (C6), and ventral (C7) views. D–F. Euhelopus zdanskyi Wiman, 1929 teeth (PMU.R−182i, −182g, −182b, respectively) from central Shandong Province, China, Mengyin Formation, Early Cretaceous, in lingual view showing cingulum and boss. G–I. Mamenchisaurus fuxiensis Hou, Zhao and Chu, 1976 teeth (C.1042) from Wujiaba, Zigong Perfecture, China, Upper Shaximiao Formation, Late Jurassic, in lingual view.

Fig. 4 in First evidence of a mamenchisaurid dinosaur from the Upper Jurassic-Lower Cretaceous Phu Kradung Formation of Thailand

Fig. 4. Schematic drawing of mamenchisaurid posterior cervical vertebra from Phu Dan Ma, Kalasin Province, Thailand, Phu Kradung Formation, Late Jurassic–Early Cretaceous. Vertebra (SM KS26−4), right rib (SM KS26−2), and left rib (SM KS26−3), in anterior (A), left lateral (B), posterior (C), right lateral (D), and dorsal (E) views.

Fig. 2 in First evidence of a mamenchisaurid dinosaur from the Upper Jurassic-Lower Cretaceous Phu Kradung Formation of Thailand

Fig. 2. Distribution of main groups of vertebrates in the non−marine formations of Thailand (courtesy of Lionel Cavin, Muséum d'Histoire Naturelle, Geneva). Fm., Formation.

Fig. 3 in First evidence of a mamenchisaurid dinosaur from the Upper Jurassic-Lower Cretaceous Phu Kradung Formation of Thailand

Fig. 3. Posterior cervical vertebra of Mamenchisaurus sp. from Phu Dan Ma, Kalasin Province, Thailand, Phu Kradung Formation, Late Jurassic–Early Cretaceous. Vertebra (SM KS26−4), right rib (SM KS26−2), and left rib (SM KS26−3) in anterior (A; A2, close−up view of neural spine showing attachment scar for interspinal elastic ligament), left lateral (B), posterior (C), right lateral (D; D2, close−up view of articular condyle showing a cancellous internal structure), and dorsal (E) views.

Fig. 1. A in First evidence of a mamenchisaurid dinosaur from the Upper Jurassic-Lower Cretaceous Phu Kradung Formation of Thailand

Fig. 1. A. Location of the study area on the map of Thailand. B. A map of sauropod distribution in the Late Jurassic–Early Cretaceous, Phu Kradung Formation of the Kalasin−Mukdahan region, northeastern Thailand; Phu Dan Ma in Kuchi Narai District, Kalasin Province and Dan Luang in Khamcha−i District, Mukdahan Province.

Fig. 8 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 8. Single most parsimonious tree derived from maximum parsimony analysis of 49 hadrosauroid species, highlighting the position of Saurolophus morrisi sp. nov. within saurolophine hadrosaurids. Numbers above the branches indicate decay indices (Bremer support), whereas those below indicate bootstrap frequencies. Lambeeosaurinae is collapsed into a single branch for clarity; lambeosaurine interrelationships recovered were identical to those in Fig. 7.

Fig. 1 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 1. Partial right postorbital of a hadrosaurid dinosaur Saurolophus morrisi sp. nov. (LACM/CIT 2852), lower Maastrichtian Moreno Formation of San Benito County, California, USA, showing the autapomorphic ornamentation of its jugal process. Posterior (A) and right lateral (B) views.

Fig. 5 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 5. Appendicular elements of a hadrosaurid dinosaur Saurolophus morrisi sp. nov. (LACM/CIT 2760, a subadult), lower Maastrichtian Moreno Formation of Panoche Hills, Fresno County, California, USA. A. Partial left scapula and coracoid in lateral view. B. Partially articulated forelimb elements. C. Proximal segment of right tibia in lateral view. D. Distal fragments of femora. E. Right metatarsal III in dorsal view.

Fig. 3 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 3. Right posterolateral view of the frontal of a hadrosaurid dinosaur Saurolophus morrisi sp. nov. (LACM/CIT 2760, a subadult), lower Maastrichtian Moreno Formation of Panoche Hills, Fresno County, California, USA, showing the eroded remnant of the buttressing base of the posterodorsal frontal ramus.

Fig. 7 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 7. Strict consensus tree of the three most parsimonious trees derived from maximum parsimony analysis of 49 hadrosauroid species. LACM/CIT 2760 and 2852 were coded as separate OTUs and their position within Saurolophinae in highlighted in the cladogram. Numbers above the branches indicate decay indices (Bremer support), whereas those below indicate bootstrap frequencies.

Fig. 9 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 9. Comparison of the general skull and premaxillary morphology of two hadrosaurid dinosaurs Saurolophus osborni Brown, 1912, holotype AMNH 5220 (A) and Saurolophus morrisi sp. nov., holotype LACM/CIT 2852 (B), highlighting characters shared by these two taxa. Skull in right lateral view (A1, B1), right premaxilla in lateral view (A2, B2).The white inscription on the premaxilla denote the abbreviation for that bone, painted by the curatorial staff back in the early twentieth century.

Fig. 6 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 6. Appendicular elements of a hadrosaurid dinosaur Saurolophus morrisi sp. nov. (LACM/CIT 2852), lower Maastrichtian Moreno Formation of San Benito County, California, USA. A. Partial right scapula in lateral view. B. Right ulna in lateral view and possible manual phalanx II−1 in dorsal view. C. Right metatarsal III in dorsal (C1) and lateral (C2) views.

Fig. 2 in A new species of saurolophine hadrosaurid dinosaur from the Late Cretaceous of the Pacific coast of North America

Fig. 2. Partial skull roof of a hadrosaurid dinosaur Saurolophus morrisi sp. nov. (LACM/CIT 2760, a subadult), lower Maastrichtian Moreno Formation of Panoche Hills, Fresno County, California, USA. Dorsal (A) and ventral (B) views. Photographs (A1, B1) and interpretative drawings (A2, B2).

Fig. 4 in An ankylosaurid dinosaur from Mongolia with in situ armour and keratinous scale impressions

Fig. 4. Tail of an ankylosaurid dinosaur Tarchia cf. gigantea, ZPAL MgD I/113 from the Nemegt Formation at Altan Uul III, Mongolia, compared to tail of Saichania (MPC 100/1305) from the Baruungoyot Formation at Khulsan, Mongolia. Osteoderms found attached to the tail of ZPAL MgD I/113 are marked by numbers according to the Types 1–10 description in the text.

Fig. 3 in An ankylosaurid dinosaur from Mongolia with in situ armour and keratinous scale impressions

Fig. 3. An ankylosaurid dinosaur Tarchia cf. gigantea, ZPAL MgD I/113 from the Nemegt Formation at Altan Uul III, Mongolia. A. Dorsal view of the trunk. Skin impressions and osteoderms are visible on the trunk. Osteoderms are positioned in situ along the vertebral column. The specimen only represents the posterior part of the trunk. B. Interpretive drawing of osteoderms (white) and scale imprints (grey).

Fig. 5 in An ankylosaurid dinosaur from Mongolia with in situ armour and keratinous scale impressions

Fig. 5. Dorsal view of the most distal part of the tail preserved in an ankylosaurid dinosaur Tarchia cf. gigantea, ZPAL MgD I/113 from the Nemegt Formation at Altan Uul III, Mongolia. Five relatively small scutes cover the vertebrae (Types 6 and 8). Two large plates fuse to the centra of the three most distal vertebrae. Note the large grooves on both plates (darkened and arrowed), and the shapes of the distal keels. One handle vertebra is darkened to show the interlocking prezygapophyses and neural spines. Anterior is to the right.

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Fig. 3. Thyreophoran dinosaur teeth. A in New teeth of nodosaurid ankylosaurs from the Lower Cretaceous of Southern England

Fig. 3. Thyreophoran dinosaur teeth. A. Maxillary tooth of the basal thyreophoran dinosaur Scelidosaurus harrisoni Owen, 1861 from the Lower Jurassic of Dorset, UK, NHMUK R1111 in lingual view (drawn after Barrett 2001). B. Stegosaurid tooth from Middle Jurassic of Russia, ZIN PH2/117 in?buccal view (drawn from Averianov and Krasnolutskii 2009). C. Nodosaurid tooth from the?Lower Cretaceous of Dorset,UK, NHMUK R2940 in?labial (C 1) and?lingual (C 2) views. D. Tooth of the nodosaurid dinosaur Sarcolestes leedsi Lydekker, 1893 from the Middle Jurassic of Fletton, Cambridgeshire, UK, NHMUK R2682, holotype in medial view. Scale bar: A–C, 10 mm; D, 3 mm.

opencc-by-4.0May 2013View details →

Fig. 2 in Juvenile-only clusters and behaviour of the Early Cretaceous dinosaur Psittacosaurus

Fig. 2. Cluster of six juvenile ceratopsian dinosaurs Psittacosaurus (IVPP V14341) from the Early Cretaceous of Lujiatun, Liaoning Province, China. The specimen, illustrated as a photograph (A) and interpretive drawing (B), shows six aligned juvenile specimens, of which specimens 2–6 are estimated to have been two years old at death, and specimen 1 was three years old, based on bone histological analysis.