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Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia)
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| Zeitschriftentitel: | Anais da Academia Brasileira de Ciências |
|---|---|
| Personen und Körperschaften: | , |
| In: | Anais da Academia Brasileira de Ciências, 83, 2011, 1, S. 73-98 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
FapUNIFESP (SciELO)
|
| Schlagwörter: |
| author_facet |
Grillo, Orlando N. Azevedo, Sergio A.K. Grillo, Orlando N. Azevedo, Sergio A.K. |
|---|---|
| author |
Grillo, Orlando N. Azevedo, Sergio A.K. |
| spellingShingle |
Grillo, Orlando N. Azevedo, Sergio A.K. Anais da Academia Brasileira de Ciências Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) Multidisciplinary |
| author_sort |
grillo, orlando n. |
| spelling |
Grillo, Orlando N. Azevedo, Sergio A.K. 0001-3765 FapUNIFESP (SciELO) Multidisciplinary http://dx.doi.org/10.1590/s0001-37652011000100005 <jats:p>The study of pelvic and hind limb bones and muscles in basal dinosaurs is important for understanding the early evolution of bipedal locomotion in the group. The use of data from both extant and extinct taxa placed into a phylogenetic context allowed to make well-supported inferences concerning most of the hind limb musculature of the basal saurischian Staurikosaurus pricei Colbert, 1970 (Santa Maria Formation, Late Triassic of Rio Grande do Sul, Brazil). Two large concavities in the lateral surface of the ilium represent the origin of the muscles iliotrochantericus caudalis plus iliofemoralis externus (in the anterior concavity) and iliofibularis (in the posterior concavity). Muscle ambiens has only one head and originates from the pubic tubercle. The origin of puboischiofemoralis internus 1 possibly corresponds to a fossa in the ventral margin of the pré-acetabular iliac process. This could represent an intermediate stage prior to the origin of a true pré-acetabular fossa. Muscles caudofemorales longus et brevis were likely well developed, and Staurikosaurus is unique in bearing a posteriorly projected surface for the origin of caudofemoralis brevis.</jats:p> Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) Anais da Academia Brasileira de Ciências |
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| title |
Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_unstemmed |
Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_full |
Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_fullStr |
Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_full_unstemmed |
Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_short |
Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_sort |
pelvic and hind limb musculature of staurikosaurus pricei (dinosauria: saurischia) |
| topic |
Multidisciplinary |
| url |
http://dx.doi.org/10.1590/s0001-37652011000100005 |
| publishDate |
2011 |
| physical |
73-98 |
| description |
<jats:p>The study of pelvic and hind limb bones and muscles in basal dinosaurs is important for understanding the early evolution of bipedal locomotion in the group. The use of data from both extant and extinct taxa placed into a phylogenetic context allowed to make well-supported inferences concerning most of the hind limb musculature of the basal saurischian Staurikosaurus pricei Colbert, 1970 (Santa Maria Formation, Late Triassic of Rio Grande do Sul, Brazil). Two large concavities in the lateral surface of the ilium represent the origin of the muscles iliotrochantericus caudalis plus iliofemoralis externus (in the anterior concavity) and iliofibularis (in the posterior concavity). Muscle ambiens has only one head and originates from the pubic tubercle. The origin of puboischiofemoralis internus 1 possibly corresponds to a fossa in the ventral margin of the pré-acetabular iliac process. This could represent an intermediate stage prior to the origin of a true pré-acetabular fossa. Muscles caudofemorales longus et brevis were likely well developed, and Staurikosaurus is unique in bearing a posteriorly projected surface for the origin of caudofemoralis brevis.</jats:p> |
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| author | Grillo, Orlando N., Azevedo, Sergio A.K. |
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| description | <jats:p>The study of pelvic and hind limb bones and muscles in basal dinosaurs is important for understanding the early evolution of bipedal locomotion in the group. The use of data from both extant and extinct taxa placed into a phylogenetic context allowed to make well-supported inferences concerning most of the hind limb musculature of the basal saurischian Staurikosaurus pricei Colbert, 1970 (Santa Maria Formation, Late Triassic of Rio Grande do Sul, Brazil). Two large concavities in the lateral surface of the ilium represent the origin of the muscles iliotrochantericus caudalis plus iliofemoralis externus (in the anterior concavity) and iliofibularis (in the posterior concavity). Muscle ambiens has only one head and originates from the pubic tubercle. The origin of puboischiofemoralis internus 1 possibly corresponds to a fossa in the ventral margin of the pré-acetabular iliac process. This could represent an intermediate stage prior to the origin of a true pré-acetabular fossa. Muscles caudofemorales longus et brevis were likely well developed, and Staurikosaurus is unique in bearing a posteriorly projected surface for the origin of caudofemoralis brevis.</jats:p> |
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| spelling | Grillo, Orlando N. Azevedo, Sergio A.K. 0001-3765 FapUNIFESP (SciELO) Multidisciplinary http://dx.doi.org/10.1590/s0001-37652011000100005 <jats:p>The study of pelvic and hind limb bones and muscles in basal dinosaurs is important for understanding the early evolution of bipedal locomotion in the group. The use of data from both extant and extinct taxa placed into a phylogenetic context allowed to make well-supported inferences concerning most of the hind limb musculature of the basal saurischian Staurikosaurus pricei Colbert, 1970 (Santa Maria Formation, Late Triassic of Rio Grande do Sul, Brazil). Two large concavities in the lateral surface of the ilium represent the origin of the muscles iliotrochantericus caudalis plus iliofemoralis externus (in the anterior concavity) and iliofibularis (in the posterior concavity). Muscle ambiens has only one head and originates from the pubic tubercle. The origin of puboischiofemoralis internus 1 possibly corresponds to a fossa in the ventral margin of the pré-acetabular iliac process. This could represent an intermediate stage prior to the origin of a true pré-acetabular fossa. Muscles caudofemorales longus et brevis were likely well developed, and Staurikosaurus is unique in bearing a posteriorly projected surface for the origin of caudofemoralis brevis.</jats:p> Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) Anais da Academia Brasileira de Ciências |
| spellingShingle | Grillo, Orlando N., Azevedo, Sergio A.K., Anais da Academia Brasileira de Ciências, Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia), Multidisciplinary |
| title | Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_full | Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_fullStr | Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_full_unstemmed | Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_short | Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| title_sort | pelvic and hind limb musculature of staurikosaurus pricei (dinosauria: saurischia) |
| title_unstemmed | Pelvic and hind limb musculature of Staurikosaurus pricei (Dinosauria: Saurischia) |
| topic | Multidisciplinary |
| url | http://dx.doi.org/10.1590/s0001-37652011000100005 |