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The oldest known amniotic embryos suggest viviparity in mesosaurs
The earliest undisputed crown-group amniotes date back to the Late Carboniferous, but the fossil record of amniotic eggs and embryos is very sparse, with the oldest described examples being from theExpand
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Optimal swimming speed estimates in the Early Permian mesosaurid Mesosaurus tenuidens (Gervais 1865) from Uruguay
Abstract Mesosaurid biology has been subject of continuous debate since the first description of Mesosaurus tenuidens by Paul Gervais in 1867. Controversy surrounds their environmental and feedingExpand
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Human growth hormone treatment in prepubertal children with achondroplasia.
We studied the effects of recombinant human growth hormone (GH) treatment in 6 prepubertal children with achondroplasia. The patients' age ranged from 2 11/12 to 8 5/12 years and the GH dose was ofExpand
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Early archosauromorph remains from the Permo-Triassic Buena Vista Formation of north-eastern Uruguay
The Permo-Triassic archosauromorph record is crucial to understand the impact of the Permo-Triassic mass extinction on the early evolution of the group and its subsequent dominance in MesozoicExpand
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Transfer of bovine blastocysts derived from short-term in vitro culture of low quality morulae produced in vivo.
The aim of this study was to evaluate if blastocysts arising from in vitro culture of Grade 3 bovine morulae produced in vivo can promote acceptable pregnancy rates when transferred into recipients.Expand
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Preliminary Biochemical and Venomic Characterization of the Venom of Phalotris lemniscatus (Serpentes, Colubridae).
BACKGROUND For many decades, research on snake venom toxinology focused mainly on the venoms of Viperidae and Elapidae species, which were traditionally the only ones considered as venomous. However,Expand
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The ontogenetic transformation of the mesosaurid tarsus: a contribution to the origin of the primitive amniotic astragalus
The hypotheses about the origin of the primitive amniotic tarsus are very speculative. Early studies argued that the origin of the astragalus, one of the largest proximal bones in the tarsus of basalExpand
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Was Mesosaurus a Fully Aquatic Reptile?
Mesosaurs have been considered strictly aquatic animals. Their adaptations to the aquatic environment are well known and include putative viviparity as the reproductive strategy along to the presenceExpand
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A NEW GENUS AND SPECIES OF OPISTHOGONIMID (DIGENEA) OF LIOPHIS ANOMALUS (SERPENTES: COLUBRIDAE) FROM URUGUAY
During a study on the helminth fauna of Liophis anomalus specimens deposited in the Reptile Collection of the Sección Zoología Vertebrados, Facultad de Ciencias, Uruguay, a new genus ofExpand
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