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153 results for “Dyrosauridae”
FIG. 96 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 96. — Projected great axes of the femoral condyles and head onto a X-Y plane perpendicular to the greatest axis of the femur: A, Dakosaurus maximus (Plieninger, 1846), SMNS 8203; B, 'Metriorhynchus' brachyrhynchus (Eudes-Deslongchamps, 1867), NHMUK PV R 3804; C, 'Metriorhynchus' brachyrhynchus, NHMUK PV R 4763; D, Suchodus durobrivensis Lydekker, 1890, NHMUK PV R 2618. Target indicates anterior. Arrow points anteriorly. Femora with anteversion will display similar orientations of the greatest axis of the distal condyles and the femoral head. Scale bars: A, B, 5 cm; C, D, 1 cm.
FIG. 95 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 95. — Projected great axes of the femoral condyles and head onto a X-Y plane perpendicular to the greatest axis of the femur: A, Charitomenosuchus leedsi (Andrews, 1909), NHMUK PV R 3806; B, Neosteneosaurus edwardsi (Eudes-Deslongchamps, 1868), NHMUK PV R 2076; C, Lemmysuchus obtusidens (Andrews, 1909), NHMUK PV R 3168; D, Machimosaurus sp., SMNS 81608. Target indicates anterior. Arrow points anteriorly. Femora with anteversion will display similar orientations of the greatest axis of the distal condyles and the femoral head. Scale bars: 5 cm.
FIG. 93 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 93. — Comparison of the adduction and abduction movements with similar femoral head orientation between Dyrosauridae, Metriorhynchoidea and Teleosauroidea in lateral and anterior views: A, Congosaurus bequaerti Dollo, 1914 (holotype); B, 'Metriorhynchus' brachyrhynchus (Eudes-Deslongchamps, 1867), NHMUK PV R 4763; C, Neosteneosaurus edwardsi (Eudes-Deslongchamps, 1868), NHMUK PV R 3701. Target indicates anterior. Arrow points anteriorly. Scale bars: 10 cm.
FIG. 99 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 99. — Comparison of hind fin shapes in three different clades of marine reptiles:A, Thalattosuchia; B, Ichthyosauria;C, Plesiosauria.
FIG. 92 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 92. — Comparative figures illustrating the dorsoventral compression Crocodyliformes femora using the unidirectional scaling tool in Blender (version 3.6.2). In the compressed femora, the distal condyles appear further squashed, not reoriented: 1, Mecistops cataphractus Cuvier, 1825, RBINS 18374; 2, Hyposaurus natator (Troxell, 1925), NJSM 23368; 3, Hyposaurus natator, YPM VP.000753;4: Congosaurus bequaerti Dollo, 1914, MRAC 1817; A, anterior view; B, posterior view; C, dorsal view; D, ventral view. Blue line represents main axis of femoral head; orange line indicates main axis of medial distal condyle; fuchsia line indicates main axis of lateral distal condyle. Target indicates anterior. Cross indicates posterior. Arrow points anteriorly. Scale bars: 5 cm.
FIG. 98 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 98. — Projected great axes of the femoral condyles and head onto a X-Y plane perpendicular to the greatest axis of the femur: A, Thalattosuchus superciliosus (Blainville in Eudes-Deslongchamps & Blainville, 1852), NHMUK PV R 1530; B, 'Thalattosuchus' superciliosus, GLAHM V1005; C, 'Thalattosuchus' superciliosus, GLAHM V960; D, Tyrannoneustes lythrodectikos Young, de Andrade, Brusatte, Sakamoto & Liston, 2012, GLAHM V1145. Target indicates anterior. Arrow points anteriorly. Femora with anteversion will display similar orientations of the greatest axis of the distal condyles and the femoral head. Scale bars: A, B, D, 5 cm; C, 1 cm.
FIG. 89 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 89. — Comparison of dyrosaurid and crocodylian pubes; the pubes are placed on a flat surface in either anterior or posterior view to illustrate their geometry: A, basal Dyrosauridae de Stefano, 1903; B, derived Dyrosauridae; C, Crocodylia Owen, 1842. For scale bars, see the other Figures in the article.
FIG. 85 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 85. — Comparison of the pelvic area among Thalattosuchia: A, Crocodylia; B, Dyrosauridae; C, Teleosauroidea; D, Metriorhynchoidea. Girdles in anterior view. For scale bars, see the other Figures in the article.
FIG. 87 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 87. — Comparison of thalattosuchian pubes; the pubes are placed on a flat surface in either anterior or posterior view to illustrate their geometry: A, Metriorhynchoidea Fitzinger, 1843; B, Metriorhynchinae Fitzinger, 1843; C, Rhacheosaurini Young, Bell & Brusatte, 2011; D, Geosaurinae Lydekker, 1889; E, Geosaurini Lydekker, 1889. For scale bars, see the other Figures in the article.
FIG. 86 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 86. — Comparison of crocodyliformes ischia: A, Dyrosauridae de Stefano, 1903; B, Teleosauroidea Geoffroy SaintHilaire, 1831; C, Metriorhynchoidea Fitzinger, 1843. Ischia are placed on a flat surface in either medial or lateral view. For scale bars, see the other Figures in the article.
FIG. 90 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 90. — Hypothetical generalized reconstruction of the pelvic girdle musculature of extinct crocodyliformes. Drawings based on: A, B, Thalattosuchus superciliosus (Blainville in Eudes-Deslongchamps & Blainville, 1852), NHMUK PV R 2054; C, D, Charitomenosuchus leedsi (Andrews, 1909), NHMUK PV R 3806; E, F, Dyrosaurus maghribensis Jouve, Iarochène, Bouya & Amaghzaz, 2006, OCP DEK-GE 252; A, Metriorhynchoidea in lateral view; B, Metriorhynchoidea in medial view; C, Teleosauroidea in lateral view; D, Teleosauroidea in medial view; E, Dyrosauridae in lateral view; F, Dyrosauridae in medial view. Muscle reconstructions based on the works of Romer (1923), Otero et al. (2010) and Allen et al. (2014). For scale bars, see the other Figures in the article.
FIG. 84 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 84. — Comparison of thalattosuchian and dyrosaurid sacral vertebra: A, Dyrosauridae de Stefano, 1903; B, Teleosauroidea Geoffroy SaintHilaire, 1831; C, Metriorhynchoidea Fitzinger, 1843. The sacrals are placed in either anterior or posterior view. The order of each vertebrae is indicated in each case: S1, first sacral; S2, second sacral. For scale bars, see the other Figures in the article.
FIG. 83 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 83. — Rhacheosaurus gracilis Von Meyer, 1831, NHMUK PV R 3948: A, entire skeleton; B, hindlimb detail; C, pubis detail. Note the skin impression as the darker tone surrounding the body. Scale bar: 1 cm.
FIG. 97 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 97. — Projected great axes of the femoral condyles and head onto a X-Y plane perpendicular to the greatest axis of the femur: A, Pelagosaurus typus Bronn, 1841, SMNS 52034; B, Thalattosuchus superciliosus (Blainville in Eudes-Deslongchamps & Blainville, 1852), NHMUK PV R 2032; C, Thalattosuchus superciliosus, NHMUK PV R 2054; D, Torvoneustes carpenteri (Wilkinson, Young & Benton, 2008), BRSMG Cd7203. Target indicates anterior. Arrow points anteriorly. Femora with anteversion will display similar orientations of the greatest axis of the distal condyles and the femoral head. Scale bars: A, 1 cm; B-D, 5 cm.
FIG. 91 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 91. — Pelvic girdle of Hyposaurus natator (Troxell, 1925), YPM VP.000753 and Thalattosuchus superciliosus (Blainville in Eudes-Deslongchamps & Blainville, 1852), NHMUK PV R 2054, showing the possible motion of the pubis. Yellow represents the resting stance; purple represents the maximum dorsal position. A, lateral view; B, anterior view; C, detail of the pubic peduncle. Target indicates anterior. Arrow points anteriorly. The left ilium, ischium and pubis of Hyposaurus natator are mirrored. The ischium of of Hyposaurus natator has been partially reconstructed. The right ilium, ischium and pubis of Thalattosuchus superciliosus are mirrored. Scale bars: 5 cm.
FIG. 80 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 80. — Phylogeny of Teleosauroidea (Part 3). Numbers highlight acquisition of morphologies based on our morphological observations. Color alternating for readability.
FIG. 79 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 79. — Phylogeny of Teleosauroidea (Part 2). Numbers highlight acquisition of morphologies based on our morphological observations. Color alternating for readability.
FIG. 94 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 94. — Projected great axes of the femoral condyles and head onto a X-Y plane perpendicular to the greatest axis of the femur: A, Congosaurus bequaerti Dollo, 1914, MRAC 1817; B, Hyposaurus natator,NJSM 23368; C, Mecistops cataphractus Cuvier, 1825, RBINS 18374; D, Palaeosuchus palpebrosus Cuvier, 1807, RVCJRH-PP1. Femora with anteversion will display similar orientations of the greatest axis of the distal condyles and the femoral head. Scale bars: A, 5 cm; B-D, 1 cm.
FIG. 81 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 81. — Phylogeny of Dyrosauridae (Part 1). Numbers highlight acquisition of morphologies based on our morphological observations. Figure modified from Jouve & Jalil (2020).
FIG. 77 in Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)
FIG. 77. — Phylogeny of Metriorhynchoidea (Part 3). Figure modified from Young et al. (2020b) for the global phylogeny; relationships of Cricosaurus suevicus (Fraas, 1901), Cricosaurus albersdoerferi (Sachs, Young, Abel & Mallison, 2021) and Cricosaurus bambergensis (Sachs, Young, Abel & Mallison, 2019) modified from Sachs et al. (2021). Color alternating for readability.
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Allen Brain Atlas
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