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48 results for “Dental microwear”
FIGURE 4 in Paleoecology of the Rhinocerotidae (Mammalia, Perissodactyla) from Béon 1, Montréal-du-Gers (late early Miocene, SW France): Insights from dental microwear texture analysis, mesowear, and enamel hypoplasia
FIGURE 4. The three different types of hypoplasia considered in this study and the associated measurements. A- Lingual view of right M2 of the specimen MHNT.PAL.2004.0.58 (H. beonense) displaying three types of hypoplasia. B- Interpretative drawing of the photo in A illustrating the hypoplastic defects: a- pitted hypoplasia, b- linear enamel hypoplasia, and c- aplasia. C- Interpretative drawing of the photo in A illustrating the measurements: 1- distance between the base of the defect and the enamel-dentin junction, 2- width of the defect (when applicable).
FIGURE 3 in Paleoecology of the Rhinocerotidae (Mammalia, Perissodactyla) from Béon 1, Montréal-du-Gers (late early Miocene, SW France): Insights from dental microwear texture analysis, mesowear, and enamel hypoplasia
FIGURE 3. Principle of mesowear scoring with the main variables illustrated (occlusal relief and cusp shape) and examples on rhinocerotid teeth. A- Typically two parameters are studied in mesowear: cusp shape and occlusal relief. Cusp shape can be sharp, round or blunt, while occlusal relief is whether high or low. Illustration on the upper right M1 of the specimen MHNT.PAL.2004.0.58 (H. beonense). Examples of mesowear scores using the three methods tested in this study (ScoreA, ScoreB, Ruler) are provided on the paracone of the following specimens: B- Right D4 of MHNT.PAL.2015.0.1204 (G2 685; Pl. mirallesi), C- Left M1 and M2 MHNT.PAL.2015.0.277 (Pr. douvillei), D- Left D4 of MHNT.PAL.2015.0.1204 (Béon F2 193; Pl. mirallesi), E- Left D3 and D4 of MHNT.PAL.2015.0.2796 (Pr. douvillei). ScoreA: mesowear score based on Winkler and Kaiser (2011); B- ScoreB: mesowear score adapted from Fortelius and Solounias (2000); C- Ruler: mesowear score based on Mihlbachler et al. (2011).
FIGURE 6 in Paleoecology of the Rhinocerotidae (Mammalia, Perissodactyla) from Béon 1, Montréal-du-Gers (late early Miocene, SW France): Insights from dental microwear texture analysis, mesowear, and enamel hypoplasia
FIGURE 6. Comparison of hand- and sand-prepared DMTA surfaces (200x200 µm) by species. Topography and black and white photosimulation of the following specimens: B. brachypus – hand-prepared MHNT.PAL.2015.0.1262 right m3 (protoconid, shearing facet) and sand-prepared MHNT.PAL.2015.0.2830 left m2 (hypoconid, shearing facet); Pr. douvillei – hand prepared MHNT.PAL.2015.0.1228 left m3 (protoconid, grinding facet) and sand-prepared MHNT.PAL.2015.0.2758 left m2 ptc (protoconid, grinding facet); Pl. mirallesi – hand-prepared MHNT.PAL.2015.0.1196 left m2 ptc (protoconid, shearing facet) and sand-prepared MHNT.PAL.2015.0.2794 (2002 E2 30) left m1 (hypoconid, shearing facet); H. beonense – hand-prepared MHNT.PAL.2015.0.1140 left m1 (hypoconid, grinding facet) and sand-prepared MHNT.PAL.2015.0. 1136.1 right M3 (protocone, grinding facet).
FIGURE 2 in Paleoecology of the Rhinocerotidae (Mammalia, Perissodactyla) from Béon 1, Montréal-du-Gers (late early Miocene, SW France): Insights from dental microwear texture analysis, mesowear, and enamel hypoplasia
FIGURE 2. Localization of the microwear facets on rhinocerotid molars. Position of the two microwear facets (grinding and shearing) on the second upper molar (left) and second lower molar (right). Both facets are sampled on the same enamel band with (grinding) or without (shearing) Hunter-Schreger bands (HSB). Modified after Hullot et al. (2019).
Buccal dental microwear micrographs from different Late Prehistory farming groups obtained with optical microscopy
<p><strong>Buccal dental microwear images and database from different Late prehistory farming groups from the Iberian Peninsula analyzed with the Optical Microscope at 100 magnifications.</strong></p> <p>Groups analyzed: Cova de l´Avi (Vallirana, Barcelona), Can Sadurní (Begues, Barcelona), Cova de la Guineu (Font-Rubí, Barcelona), Cova Foradada (Calafell, Tarragona), Cova del Trader (Cubelles, Barcelona), Roc de les Orenetes (Ripollès, Girona), Cova del Gegant (Sitges, Barcelona), Cova dels Galls Carboners (Mont-ral, Tarragona).</p> <p>Methodology explained in: Hernando, R., Fernández-Marchena, J. L., Willman, J. C., Ollé, A., Vergès, J. M., & Lozano, M. (2020). Exploring the utility of optical microscopy versus scanning electron microscopy for the quantification of dental microwear. <em>Quaternary International</em>, <em>569</em>, 5-14.</p> <p>Related paper: Hernando, R; Moreno-Ibáñez, M.Á., Carbonell, E., Cebrià, A., Daura, J., Díez-Canseco, C., Edo, M., Fullola, J., Morales, J.I., Oms, F.X., Ramírez-Pedraza, I., Sanz, M., Subirà, M.E., Tornero, C., Vergès, J.M., Lozano, M. (2024). Eating through time: Understanding dietary practices across late Prehistory in the northeastern Iberian Peninsula. Am. J. Biol. Anthropol. e24950. DOI:10.1002/ajpa.24950</p>
Dental raw mesowear and microwear data for the ungulates from Units I, IIa and IIb from Nesher Ramla (Israel)
<p>Raw data from the low-magnification analysis (x35) of dental microwear and the mesowear analysis of the ungulates from Units I, IIa and IIb from Nesher Ramla (Israel)</p>
Data from: Comparative dental microwear of ruminant and perissodactyl molars: implications for paleodietary analysis of rare and extinct ungulate clades
Open the record for dataset details and reuse information.
Dietary diversity and evolution of the earliest flying vertebrates revealed by dental microwear texture analysis
<p>Supporting data for: Bestwick <em>et al.</em> (accepted) ‘Dietary diversity and evolution of the earliest true flying vertebrates revealed by dental microwear texture analysis’. Nature Communications.</p> <p>Data include .xlsx files of:</p> <ul> <li>Raw 3D microwear texture data for all extant reptiles and bats and for all pterosaurs included in the study</li> <li>Dietary breakdowns of extant reptiles and bats used in analyses</li> <li>Results of microwear texture differences between bat dietary guilds</li> <li>ISO texture parameter definitions</li> <li>Dietary correlation results between dietary component and PC 1 and 2 values</li> <li>Estimated ancestral PC 1 and 2 values for each node from the three phylogenies used in the ancestral pterosaur dietary state reconstructions.</li> </ul> <p>Also includes example R code used in the pterosaur dietary evolution reconstructions.</p>
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