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327 results for “Sauropoda”
Figure 21 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 21. Photographs and line drawings of the manus of Ligabuesaurus leanzai. A–D, right metacarpal II MCF-PVPH-233/13 in medial (A), proximal (B), distal (C) and lateral (D) views. E, distal epiphysis of the left metacarpal II MCF-PVPH-233/15 in distal view. F–I, right metacarpal III MCF-PVPH-233/14 in lateral (F), proximal (G), distal (H) and medial (I) views. J, distal epiphysis of the left metacarpal IV MCF-PVPH-233/16 in distal view. Abbreviations: am, anterior margin; lm, lateral margin; McI, articular surface for metacarpal I; McII, articular surface for metacarpal II; McIII, articular surface for metacarpal III; McIV, articular surface for metacarpal IV; pm, posterior margin; vlr, ventrolateral ridge. Scale bars: 10 cm.
Figure 12 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 12. Photographs and line drawings of the posterior cervical vertebra MCF-PVPH-233/02 of Ligabuesaurus leanzai in anterior (A), posterior (B) and right lateral (C) views. Abbreviations: acdl, anterior centrodiapophyseal lamina; cpol, centropostzygapophyseal lamina; cprl, centroprezygapophyseal lamina; di, diapophysis; lat. sprl, lateral spinoprezygapophyseal lamina; med. sprl, medial spinoprezygapophyseal lamina; nc, neural canal; ns, neural spine; pa, parapophysis; pcdl, posterior centrodiapophyseal lamina; pl, pleurocoel; podl, postzygodiapophyseal lamina; posl, postspinal lamina; poz, postzygapophysis; prdl, prezygodiapophyseal lamina; prz, prezygapophysis; r?, fragment of rib; spdl, spinodiapophyseal lamina; spol, spinopostzygapophyseal lamina; sprl, spinoprezygapophyseal lamina. Scale bar: 10 cm.
Figure 25 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 25. Photographs and line drawings of the right astragalus MCF-PVPH-233/20 of Ligabuesaurus leanzai in anterior (A), dorsal (B), lateral (C), posterior (D), ventral (E) and medial (F) views. Abbreviations: apr, ascending process of astragalus; cas, calcaneal articular surface; cpf, crest of posterior fossa; das, distal articular surface; fas, fibular articular surface; ilg, intertarsal ligament groove; pf, posterior fossa; tas, tibial articular surface. Scale bar: 10 cm.
Figure 14 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 14. Photograph and line drawing of the anterior dorsal vertebra MCF-PVPH-908 of Ligabuesaurus leanzai in anterior view. Abbreviations: acdl, anterior centrodiapophyseal lamina; cprl, centroprezygapophyseal lamina; di, diapophysis; lat. sprl, lateral spinoprezygapophyseal lamina; med. sprl, medial spinoprezygapophyseal lamina; pa, parapophysis; prsl, prespinal lamina; prz, prezygapophysis; spdl, spinodiapophyseal lamina; sprf, spinoprezygapophyseal fossa; tprl, intraprezygapophyseal lamina. Scale bar: 10 cm.
Figure 17 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 17. Photographs and line drawings of the posterior dorsal vertebrae MCF-PVPH-233/06 and MCF-PVPH-233/07 of Ligabuesaurus leanzai in anterior (A) and posterior (B) views. Abbreviations: acc. spdl, accessory spinodiapophyseal lamina; cpol, centropostzygapophyseal lamina; di, diapophysis; hypo, hyposphene; pcdl, posterior centrodiapophyseal lamina; poz, postzygapophysis; prsl, prespinal lamina; prz, prezygapophysis; spdl, spinodiapophyseal lamina; sprl, spinoprezygapophyseal lamina. Scale bar: 10 cm.
Figure 18 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 18. Photographs and line drawings of the caudal vertebra and dorsal rib of Ligabuesaurus leanzai. A–E, anterior caudal vertebra MCF-PVPH-261/15 in anterior (A), posterior (B), left lateral (C), dorsal (D) and ventral (E) views. F, G, dorsal rib MCF-PVPH-228/10 in medial view (F), with a detail of the internal pneumatic structure on the process of the capitulum (G). Abbreviations: aas, anterior articular surface; cap, capitulum; nc, neural canal; pas, posterior articular surface; rs, rib shaft; tp, transverse process; tub, tuberculum; vf, vascular foramen. Scale bars: 10 cm.
Figure 9 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 9. Photographs and line drawings of the posterior cervical vertebra MCF-PVPH-261/01 of Ligabuesaurus leanzai in anterior (A), posterior (B) and left lateral (C) views. Abbreviations: aas, anterior articular surface; apf, anterior pneumatic fossa; cprl, centroprezygapophyseal lamina; di, diapophysis; pa, parapophysis; pas, posterior articular surface; ppf, posterior pneumatic fossa; prz, prezygapophysis; r?, fragment of rib. Scale bar: 10 cm.
Figure 11 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 11. Photographs and line drawings of the posterior cervical vertebra MCF-PVPH-228/01 and MCF-PVPH-228/02 of Ligabuesaurus leanzai in anterior (A) view. Abbreviations: aas, anterior articular surface; cpol, centropostzygapophyseal lamina; di, diapophysis; poz, postzygapophysis; prdl, prezygodiapohyseal lamina; prz, prezygapophysis; sprl, spinoprezygapophyseal lamina; tprl, intraprezygapophyseal lamina. Scale bar: 10 cm.
Figure 10 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 10. Photographs and line drawings of the posterior cervical vertebra MCF-PVPH-261/02 of Ligabuesaurus leanzai in anterior (A), posterior (B) and right lateral (C) views. Abbreviations: apf, anterior pneumatic fossa; cprl, centroprezygapophyseal lamina; di, diapophysis; nc, neural canal; pa, parapophysis; ppf, posterior pneumatic fossa; prz, prezygapophysis. Scale bar: 10 cm.
Figure 8 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 8. Photographs and line drawings of the middle cervical vertebra MCF-PVPH-261/16 of Ligabuesaurus leanzai in dorsal (A), ventral (B) and left lateral (C) views. Abbreviations: acdl, anterior centrodiapophyseal lamina; apo, accessory pneumatic opening; cpol, centropostzygapophyseal lamina; cprl, centroprezygapophyseal lamina; di, diapophysis; nc, neural canal; pa, parapophysis; pcdl, posterior centrodiapophyseal lamina; pl, pleurocoel; prdl, prezygodiapophyseal lamina; prz, prezygapophysis; pvr, posteroventral ridges; spdl, spinodiapophyseal lamina; sprl, spinoprezygapophyseal lamina. Scale bar: 10 cm.
Figure 7. A in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 7. A, detail of the microwear pattern on the apical wear facet of the maxillary tooth MCF-PVPH-744 of Ligabuesaurus leanzai. Most of the pits and coarse grooves are evident with a binocular microscope (α) on the dentine exposed surface, whereas the scanning electron photomicrographs (β, γ, δ and ε) show abundant fine scars in both the enamel and dentine surfaces. Abbreviations: g, coarse groove; p, pit; s, fine scar.
Figure 5 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 5. New autapomorphic feature and revised diagnosis of Ligabuesaurus leanzai. A, Photograph and line drawings of the left coracoid MCF-PVPH-261/05 in lateral view. The quadrangular ventral half of the coracoid in lateral view is here proposed as a uniquely derived feature of Ligabuesaurus leanzai not present in any other sauropods. B–K, comparative outlines of sauropod coracoids: B, Neuquensaurus MLP-Ly-14; C, Saltasaurus PVL-4017-100; D, Quetecsaurus UNCUYO-LD-300.15; E, Opisthocoelicaudia ZPAL-MgD-I/48; F, Dreadnoughtus MPM-PV-1156; G, Tapuiasaurus MZSP-PV-807; H, Uberabatitan CPP-1109-UrHo; I, Suuwassea ANS 21122; J, Patagotitan MPEF-PV-3400/24; K, Zby ML 368. L–N, line drawings of the posterior cervical vertebra MCF-PVPH-233/02 (L) and anterior dorsal vertebrae MCF-PVPH-233/03 (M) and MCF-PVPH-908 (N), showing the development of the prespinal lamina on the anterior surface of the neural spine (green triangle). B–K modified from González Riga et al. (2019). Not to scale. Scale bar: 10 cm in L–N.
Figure 4 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 4. The somphospondylan sauropod Ligabuesaurus leanzai from Cerro de los Leones (Neuquén Province, Patagonia, Argentina). A, skeletal reconstruction based on the holotype (MCF-PVPH-233) and referred material (MCF-PVPH-261) from quarry no. 4, plus the newly referred specimens from quarry no. 3 (MCF-PVPH-228, MCF-PVPH-744 and MCF-PVPH-908). B, life restoration of Ligabuesaurus leanzai as a non-titanosaurian somphospondylan by J. L. Blanco.
Figure 3 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 3. Original picture of quarry no. 4 during the fieldwork of 2004 (A) and a quarry map with tentative arrangement of the holotype (in red) and referred material (in blue) of Ligabuesaurus leanzai (B). Abbreviations: ant, anterior; s/n, without collection number; v, vertebra.
Figure 27 in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 27. Time-calibrated phylogenetic tree, showing geographical distribution and chronostratigraphical range of Somphospondyli, based on the agreement subtree of the reduced strict consensus. Lognkosauria and Lithostrotia have been collapsed into a single lineage. Ligabuesaurus leanzai (black narrow), from the Early Cretaceous Lohan Cura Formation (Neuquén Basin), was recovered as a non-titanosaurian somphospondylan.
Figure 2. Lithological profile. A in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 2. Lithological profile. A schematic log of the the lower section of the Cullin Grande Member (Bajada del Agrio Group, Lohan Cura Formation, Lower Cretaceous, Albian) that outcrops at the Cerro de los Leones locality (modified from Martinelli et al., 2007). Abbreviations: CS, crevasse channel; FF, floodplain fines; FL, fossiliferous level; LA, lateral accretion; LS, laminated sand sheets; LV, levee; SB, sandy bedforms. Architectural element codes follow Miall (1996).
Figure 1. Location map. A in Osteology and phylogenetic relationships of Ligabuesaurus leanzai (Dinosauria: Sauropoda) from the Early Cretaceous of the Neuquén Basin, Patagonia, Argentina
Figure 1. Location map. A, satellite map of northern Patagonia (Argentina), showing the approximate limits of Neuquén Basin (white dashed line). B, the Cerro de los Leones locality is ~10 km to the south-west of Picún Leufú city, to the south of the Neuquén Province (white crossed pickaxes). C, satellite map of the main quarries opened on the southern flank of the Cerro de los Leones, where outcropping of the fluvial sediments of the Lohan Cura Formation (Albian) occurs.
Data from: A basal lithostrotian titanosaur (Dinosauria: Sauropoda) with a complete skull: implications for the evolution and paleobiology of Titanosauria
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Data from: Body size evolution in Titanosauriformes (Sauropoda, Macronaria)
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Data from: Reassessment of the non-titanosaurian somphospondylan Wintonotitan wattsi (Dinosauria: Sauropoda: Titanosauriformes) from the mid-Cretaceous Winton Formation, Queensland, Australia
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