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9 results for “Rebbachisauridae”
Fig. 4 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 4. Detail of the right transverse process of a middle or posterior dorsal vertebra (UNPSJB-PV 1007/5) of the rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. Computed tomography (CT)-based reconstruction of the transverse process and diapophysis in posterior view, with black rectangle indicating location of axial CT "slice" shown in B. B. Axial CT "slice" showing intradiapophyseal chamber, with black and white arrowheads indicating cortical and trabecular tissues, respectively. Reconstruction of the transverse process and diapophysis in medial (C) and posterior (D) views. Black rectangle indicates location of sagittal CT "slice" shown in E. E. Sagittal CT "slice" through intradiapophyseal chamber.
Fig. 3 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 3. Partial anterior to middle dorsal vertebra (UNPSJB-PV 1007/12) of the rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. Computed tomography (CT)-based digital reconstruction in left anterolateral view. B. Axial CT "slice" in anterior view, with hypothesized pneumatic structures indicated by arrows. Note internal cavity in left diapophysis.
Fig. 7 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 7. Cervical vertebrae of rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. UNPSJB-PV 1007/1, anterior cervical vertebra in anterior (A1) and right ventrolateral (A2) views. B. UNPSJB-PV 1007/2, anterior cervical vertebra in right lateral view. C. UNPSJB-PV 1007/3, middle cervical vertebra in right lateral view. Lateral fossae of the centrum (hypothesized as pneumatic in origin) indicated by arrows.
Fig. 9 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 9. Comparison of the reconstructed pulmonary systems of the sauropod clades Rebbachisauridae (Diplodocoidea) and Saltasaurinae (Titanosauria) in right lateral view. A. Reconstructed pulmonary anatomy of a generalized rebbachisaurid. Skeletal reconstruction based largely on Nigersaurus taqueti (Sereno et al. 2007: fig. 3a); pulmonary anatomy based on data presented herein, i.e., hypothesized osteological correlates of pneumaticity described in multiple rebbachisaurids, but primarily Katepensaurus goicoecheai (cervical and dorsal pneumaticity) and Tataouinea hannibalis (sacral, caudal, and pelvic pneumaticity). B. Reconstructed pulmonary anatomy of a saltasaurine (after Cerda et al. 2012: fig. 4a). Color coding of pulmonary structures is as follows: orange, lung; green, cervical air sac system; yellow, clavicular air sac system; blue, abdominal air sac system. Postcranial skeletal elements that are known to have been pneumatized are shown in gray; bones that were either apneumatic or for which this condition is uncertain are in white.
Fig. 1. A in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 1. A. Simplified phylogeny of Diapsida showing position of Rebbachisauridae and both components of the rebbachisaurid Extant Phylogenetic Bracket sensu Witmer 1995 (Crocodylia and Aves). Rectangle indicates absence of postcranial pneumaticity; triangles indicate presence of postcranial pneumaticity. B. Hypothesized osteological correlates of pneumatic and other soft tissue structures in archosaurian vertebrae (based on O'Connor 2006).
Fig. 8 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 8. Anterior view of anterior caudal vertebrae of rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. UNPSJB-PV 1007/7. B. UNPSJB-PV 1007/8. Hypothesized pneumatic fossae indicated by arrows.
Fig. 5 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 5. Computed tomography-based visualizations of middle to posterior dorsal vertebra (UNPSJB-PV 1007/4) of the rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. Three-dimensional digital model in right posterolateral view. B. Sagittal section (anterior to left) with arrows indicating internal cavities hypothesized as pneumatic structures.
Fig. 6 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 6. Histology of a dorsal rib (UNPSJB-PV 1007/28) of the holotype of the rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. Complete cross section of the rib sampled for histology. B. Detail of the dense Haversian bone in the cortex. C. General view of fibrolamellar bone tissue. D. Detail of fibrolamellar bone tissue. Note the abundance of longitudinally oriented vascular spaces in C and D. E. Four of the seven growth marks preserved in the primary bone tissue (indicated by arrowheads).
Fig. 2 in A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae
Fig. 2. Dorsal vertebrae of the rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. UNPSJB-PV 1007/13, partial anterior dorsal vertebra in left lateral view. B. UNPSJB-PV 1007/12, partial anterior to middle dorsal vertebra in dorsal view (B2), detail of right laterodiapophyseal fossa in dorsal view (B1). C. UNPSJB-PV 1007/4, middle or posterior dorsal vertebra in right lateral view (dashed lines indicate approximate margins of laterodiapophyseal fenestra). D. UNPSJB-PV 1007/5, middle or posterior dorsal vertebra in right lateral view (D1), detail of right laterodiapophyseal fenestra in right posterolateral view (D2). Arrows indicate hypothesized pneumatic structures.
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