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| Otero,Alejandro; Vizcaíno,Sergio F.. |
| We present the reconstruction of the hindlimb musculature of the titanosaur sauropod Neuquensaurus australis (Lydekker), integrating data from crocodilians and birds as a phylogenetic bracket. First, we evaluate sites of origin and insertions in N. australis by comparison with extant archosaurs as well as with previous works on dinosaur soft anatomy, and reconstruct principal muscles of the leg, such as Triceps femoris group, M. iliofibularis, Mm. adductores femores, Mm. gastrocnemii, M. ischiotrochantericus and Mm. caudofemorales. Second, we infer the probable function of each muscle comparing with our bracket taxa and with living analogs, principally mammals, because they are thought to be the best model to understand non-avian dinosaur locomotion. This... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Archosauria; Extant Phylogenetic Bracket; Soft tissue; Functional morphology. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142008000200007 |
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| Perry,Jonathan M. G.; Kay,Richard F.; Vizcaíno,Sergio F.; Bargo,M. Susana. |
| Inferences about the diet of Miocene platyrrhine monkeys have relied upon the morphology of the molar teeth, specifically the crests on the molars. Using a library of Micro-CT images of a broad comparative sample of living platyrrhines (callitrichines, cebines, pitheciids and atelids), late early Miocene Homunculus, and the early Miocene Tremacebus and Dolichocebus, we extend these inferences by examining the surface areas of the tooth roots, anchor points for the periodontal ligaments. From muscle scars on the skull, we estimate the mechanical leverage of the chewing muscles at bite points from the canine to the last molar. Extant platyrrhines that gouge bark to obtain exudates do not have especially large canine roots or anterior premolar roots compared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Primates; Platyrrhini; Homunculus; Miocene; Teeth; Diet. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142010000300007 |
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