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43 results for “mesowear”
Figure 9 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 9. Model of masticatory motion of icriodontid I elements. A, oblique lateral view; B, 'anterior' view.
Figure 8 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 8. Motion of P1 elements of ozarkodinid apparatuses summarized from the literature. A, Idiognathodus (Pennsylvanian); B, Novispathodus (Early Triassic); C, Wurmiella excavata (Silurian); D, Pseudofurnishius murcianus (Middle–Late Triassic); E, Polygnathus xylus xylus (Middle Devonian). Grey dots mark the pivot point; black arrows indicate the direction of occlusion and interlocking of P1 elements, grey arrows its reversal.
Figure 7. Hypothetical apparatus reconstruction deduced from the element arrangement within the Caudicriodus woschmidti conodont cluster. A, Model 1 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 7. Hypothetical apparatus reconstruction deduced from the element arrangement within the Caudicriodus woschmidti conodont cluster. A, Model 1 with tips of coniform elements pointing dorsally and 'posterior' part of icriodontan elements oriented ventrally. B, Model 2 with tips of coniform elements and 'posterior' part of icriodontan elements oriented ventrally. C, Model 3 with tips of coniform elements pointing ventrally and 'posterior' part of icriodontan elements oriented dorsally. D, Model 4 with tips of coniform elements and 'posterior' part of icriodontan elements oriented ventrally. Coniform elements are arranged in multiple rows.
Figure 5 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 5. Denticle tip wear of icriodontid I elements. A–C, Icriodus aff. michiganus, dextral I element, lateral and oral view; Middle Devonian, Eifel, Germany; sample BL-12-29c-9. D–F, Icriodus sp., dextral I element, lateral and oral view; Middle Devonian, Eifel, Germany; sample BL-12-29c-3. Extent and orientation of tip wear are indicated by dotted lines and arrowheads.
Figure 6 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 6. Diagrams illustrating orientation and direction of denticle tip wear. A, Icriodus aff. michiganus; left-side illustration shows the orientation of the inclined facet plane, right-side illustration the direction of vertically inclined facet; Middle Devonian, Eifel, Germany; sample BL-12-29c-9. B, Icriodus sp. left-side illustration shows the orientation of the inclined facet plane, middle the direction of the vertically inclined facet, and right the orientation and direction of the facet plane of median row denticles; Middle Devonian, Eifel, Germany; sample BL-12-29c-3).
Figure 4. A in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 4. A, denticle tip wear of the dextral I element of Caudicriodus woschmidti; Early Devonian, southern Burgenland, Austria; Ki/ 4/2a-1, NHMW 2011/0374/0001. B, detailed view of oral surface of the dextral I element with extent and orientation of tip wear indicated by dotted line and arrow head.
Figure 3 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 3. Chronological listing of notation history for icriodontid apparatus elements. Morphologically similar coniform element types and the icriodontan element evaluated for this study are highlighted in different colours or shades.
Figure 2 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 2. Conodont cluster of Caudicriodus woschmidti, Early Devonian, southern Burgenland, Austria; Ki/4/2a-1, NHMW 2011/0374/ 0001. A, SEM scan of the conodont cluster. B, detailed view of the coniform elements (C1–C5) close to the dextral I element. C, D, computer microtomography-based three-dimensional reconstruction with identification of all elements. E, hypothetical arrangement of all elements preserved within the fused conodont cluster.
Figure 1 in A new icriodontid conodont cluster with specific mesowear supports an alternative apparatus motion model for Icriodontidae
Figure 1. Locality map and section log from the 'Kottwitz' quarry (southern Burgenland, Austria), where the Caudicriodus woschmidti conodont cluster was found.
FIGURE 7 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 7. Percentages of specimens above anisotropy (epLsar> 0.005) or complexity (Asfc> 2) cutpoints by species, facet, and preparation type. Triangles: living rhinoceros' species; circles: Béon 1 fossil rhinocerotids; size proportional to the number of specimens.
FIGURE 8 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 8. Barplots of mesowear scores on permanent teeth by method (ScoreA, ScoreB, Ruler) and by species. A- 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). Only one tooth per specimen was considered.
FIGURE 1 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 1. Location map of Béon 1 locality, Montréal-du-Gers (MN4; mid-Orleanian, late early Miocene, south western France). The locality of Béon 1 is located (red circle) on the map of France (upper left corner) and on the zoom of south western France. Main cities (grey circles; bold) and rivers are indicated on the zoomed map. Dashed line represents the Spain-France frontier. Modified from Antoine and Duranthon (1997).
FIGURE 5 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 5. Comparison of the DMTA patterns by species, facet and preparation type. Upper graphs: hand-prepared specimens; lower graphs: sand-prepared specimens. Left graphs: grinding facet; right graphs: shearing facet. Boxplots of anisotropy and complexity were plotted along with the dotplots to facilitate graph interpretation.
FIGURE 5 in Mesowear Analysis of the Tapirus polkensis population from the Gray Fossil Site, Tennessee, USA
FIGURE 5. Boxplot of crown heights of the m1 protoconid for each eruption series of Tapirus polkensis from the Gray Fossil Site. Bars represent mean values, boxes represent interquartile ranges, and whiskers represent maximum and minimum values.
FIGURE 6 in Mesowear Analysis of the Tapirus polkensis population from the Gray Fossil Site, Tennessee, USA
FIGURE 6. Scatter plot of m1 protoconid cusp angle versus crown height for specimens in each eruption series (ES) of Tapirus polkensis from the Gray Fossil Site. The line represents a least squares linear regression of these data, regression equation: m1CA = 20.5 – 13.13(m1H), correlation coefficient, r = 0.932.
FIGURE 3 in Mesowear Analysis of the Tapirus polkensis population from the Gray Fossil Site, Tennessee, USA
FIGURE 3. Tapirus polkensis dentary specimens from the Gray Fossil Site, representing examples of individuals within eruption series 2 through eruption series 7 in occlusal view. ETMNH 605, 1. ETMNH 3694, 2. ETMNH 7899, 3. ETMNH 20488, 4. ETMNH 10383, 5. ETMNH 3519, 6. Scale bar equals 1 cm.
FIGURE 7 in Mesowear Analysis of the Tapirus polkensis population from the Gray Fossil Site, Tennessee, USA
FIGURE 7. Pie chart representing the sampled population structure of Tapirus polkensis at the Gray Fossil Site, indicated by percentage of specimens in each eruption series (ES).
FIG. 6 in Extending the tooth mesowear method to extinct and extant equids
FIG. 6. — Hierarchical cluster diagrams based on the mesowear variables %high (percent high occlusal relief), %sharp (percent sharp cusps) and %blunt (percent blunt cusps) of the isolated tooth positions P2, P3, P4, M1, M2 and M3, the 3-tooth model P4+M2+M3, the 4-tooth model P4-M3 and the 5-tooth model P3-M3. Clusters based on a set of 27 "typical" recent comparison taxa after Fortelius & Solounias (2000); A-D, Hippotherium primigenium Meyer, 1829; A, from the Dinotheriensande (all localities); B, Eppelsheim; C, Esselborn; D, Westhofen; E, Equus burchelli Gray 1824 (ebN) from Sudan, Kenya and Tanzania; F, Equus burchelli (ebS) from Botswana, Namibia and Angola. For abbreviations see Table 1; upper case, browser; lower case, grazer; mixed case (capital first), mixed-feeder; mixed case (lower first), fossil species; NED, normalised Euclidean distance.
FIG. 8 in Extending the tooth mesowear method to extinct and extant equids
FIG. 8. — Hierarchical cluster diagram based on the mesowear variables %high (percent high occlusal relief), %sharp (percent sharp cusps) and %blunt (percent blunt cusps) based on the 4- tooth model (P4-M3) proposed as the model for the "extended" mesowear method in this study. Clusters based on a set of 27 "typical" recent comparison taxa after Fortelius & Solounias (2000). For abbreviations see Table 1; upper case, browser; lower case, grazer, mixed case (capital first), mixed-feeder; mixed case (lower first), fossil species; NED, normalised Euclidean distance.
Dental microwear and mesowear raw data for European and East Asian Late Pleistocene hyenas Crocuta spelaea and C. ultima ussurica
<p>Raw microwear data related to the paper "<strong>Comparison of paleodiet and niches of European and East Asian Late Pleistocene hyenas <em>Crocuta spelaea</em> and <em>C. ultima ussurica</em> based on the study of tooth microwear</strong>"</p>
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