Biomedical subjects
Publications and source records attributed to P F Puech.
The corpse of Louis XVII was autopsied in 1795 in order to leave no doubts as to the cause of his death in a troubled revolutionary period. It was searched in 1846 for identification purposes, but the estimated age of the subject unearthed did not fit. However, a forensic facial reconstruction on the skull showed a resemblance with Louis XVII that supports the theory of a substitution plot in 1795.
Studies of microwear on fossil hominid teeth have become an important approach in paleoanthropology. Since there are very few samples of early hominids from East Africa with suitable teeth, this paper presents a review of the occurrence of some dental wear characteristics to provide a data base for reconstructing the diet of the early hominids. Distinctive microwear features such as furrows, crenulations, stress lines and deep grooves, are interpretive tools that can be used in a biomechanical approach. Occurrence of the same dental microwear patterns in extant species with known dietary differences is indicative of foods that have probably been exploited in fossils.
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The three functional domains of the upper canines of Dryopithecus from Spain are analysed through microscopic examination. Evidence is presented that shows a food choice in concordance with open woodland habitat.
When Mozart died at the age of 36, was he suffering from the belated complications of a calcified extradural haematoma? This theory took shape during the identification process of the skull owned by the Mozarteum, when the print of calcified extradural haematoma was discovered on the left inner temporoparietal calvarial surface of the skull. This print looks like a rosette, with three distinct concentric areas. The first outer area is striated, the second middle one is granular and scattered with bony deposits, the third central one is marked with vascular grooves.
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Mozart's craniofacial dysmorphism shown in his portraits and in the skull held by the Mozarteum in Salzburg (Austria) helps to document the role of pathology in human identification. The specific syndrome is formed by a premature synostosis of the metopic suture (PSMS) in association with an abnormally shaped skull.
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The dentition of early hominids from Laetoli and Hadar provide evidence of "incisal stripping" and a shear-grinding action for C/P3 complex through microscopic examination of wear facets on dental crowns. This masticatory pattern of dental wear resembles that of Papio papio and suggests behavioral analogies between early hominids and Papio.
Microwear details on teeth of the complex C/P3 of Australopithecus afarensis from Hadar have been found on other Hominids like Homo erectus from Java and Homo sapiens neanderthalensis. The description provides valuable information about occlusal mechanics and diets of fossil species.
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By microscopic examination we differentiated rays appearing on dental surfaces according to the geometry of abrasive grains which produced them. Since the aspect of particules originally relied on paleoecological conditions, this new research helps us to complete our knowledge of the bolus and of fossil environment.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.