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303 results for “quarry”
Figure 13 in The osteology of the early-diverging dinosaur Daemonosaurus chauliodus (Archosauria: Dinosauria) from the Coelophysis Quarry (Triassic: Rhaetian) of New Mexico and its relationships to other early dinosaurs
Figure 13. Close-up view of the posterolateral side of the right quadrate of Daemonosaurus chauliodus (CM 76821) as a photograph (A) and as an interpretive line drawing (B). Light grey = rock matrix. Abbreviations: a., articulates with; pro, prootic; qj, quadratojugal; qu, quadrate; quc, quadrate condyle; quh, head of quadrate.
Figure 12 in The osteology of the early-diverging dinosaur Daemonosaurus chauliodus (Archosauria: Dinosauria) from the Coelophysis Quarry (Triassic: Rhaetian) of New Mexico and its relationships to other early dinosaurs
Figure 12. Posterior half of the right side of the skull of Daemonosaurus chauliodus (CM 76821) as a photograph (A) and as an interpretive line drawing (B). Light grey = rock matrix. Dotted area = poorly preserved. Scale = 1 cm. Abbreviations: a., articulates with; an, angular; at, atlas component; ax, axis; cp, cultriform process of the parasphenoid; cr, cervical rib; d, dentary; ec, ectopterygoid; f, frontal; j, jugal; la, lacrimal; mf, external mandibular fenestra; n, nasal; op, opisthotic; or, orbit; pa, parietal; pf, prefrontal; po, postorbital; pro, prootic; pt, pterygoid; qj, quadratojugal; qu, quadrate; quc, quadrate condyle; quh, quadrate head; qupt, pterygoid wing of the quadrate; sc, scleral plate; sp, splenial; sq, squamosal; stf, supratemporal fossa; su, surangular; sur, surangular ridge; t, tooth.
Figure 18 in The osteology of the early-diverging dinosaur Daemonosaurus chauliodus (Archosauria: Dinosauria) from the Coelophysis Quarry (Triassic: Rhaetian) of New Mexico and its relationships to other early dinosaurs
Figure 18. Phylogenetic relationships of Daemonosaurus chauliodus using the full dataset of Langer et al. (2017) (A) and after the removal of the problematic form Agnosphitys (B).
Figure 5 in The osteology of the early-diverging dinosaur Daemonosaurus chauliodus (Archosauria: Dinosauria) from the Coelophysis Quarry (Triassic: Rhaetian) of New Mexico and its relationships to other early dinosaurs
Figure 5. Anterior half of the left side of the skull of Daemonosaurus chauliodus (CM 76821) as a photograph (A) and as an interpretive line drawing (B). Light grey = rock matrix. Scale = 1 cm. Abbreviations: aof, antorbital fenestra; d, dentary; en, external naris; j, jugal; la, lacrimal; mx, maxilla; n, nasal; or, orbit; pal, palatine; pf, prefrontal; pmx, premaxilla; r, right; snf, subnarial foramen; sp, splenial;?, unknown.
Figure 28. Tetrapod scales from the Hiemstra Quarry. A in The postcranial anatomy of Whatcheeria deltae and its implications for the family Whatcheeriidae
Figure 28. Tetrapod scales from the Hiemstra Quarry. A, FMNH PR 5014, tetrapod gastralia; B, FMNH PR 1705, tetrapod gastralia; C, interpretive drawing of scale from FMNH PR 1700.
Data from: A juvenile turtle (Testudines, Eucryptodira) from the Upper Jurassic of the Langenberg Quarry, Oker, Northern Germany
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Data from: Paleocommunity analysis of the Burgess Shale Tulip Beds, Mount Stephen, British Columbia: comparison with the Walcott Quarry and implications for community variation in the Burgess Shale
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Data from: Biostratigraphy and geometric morphometrics of conchostracans (Crustacea, Branchiopoda) from the Late Triassic fissure deposits of Cromhall Quarry, UK
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FIG. 4 in Early Miocene squamate assemblage from the Mokrá-Western Quarry (Czech Republic) and its palaeobiogeographical and palaeoenvironmental implications
FIG. 4. — Lacertoidea indet. (A, B) and? Scincoidea indet. (C, D) from the early Miocene (MN 4) of MWQ. Left dentary Pal. 1571 (2/2003 Reptile Joint) in (A) lateral and (B) medial aspects with detail of teeth. Left maxilla Pal. 1573 (2/2003 Reptile Joint) in (C) lateral and (D) medial aspects with detail of teeth. Abbreviations: dc, dental crest; cm, carina maxillaris; lf, labial foramina; Mg, Meckel`s groove; np, nasal process; sbs, subdental shelf; srs, supradental shelf; st, striations. Scale bars: A-D, 1 mm; B', D', 100 µm.
Data from: A novel environmental restoration method for an abandoned limestone quarry with a deep open pit and steep palisades: a case study
In general, exploitation of rock materials, such as limestone or granite exploitation, can cause serious damage to the ecological environment near a mine area. With economic development and the ever-increasing demand for ore resources, mining activities have induced very serious environmental issues in China. Therefore, environmental restoration work around mines in China is urgently required. This study explores the Chuankou open-pit limestone quarry in Tongchuan City, Shaanxi Province, Northwest China, as the engineering case. The environmental issues caused by over 40 years of limestone exploitation, including land degradation, land occupation, dust pollution and potential geological disasters, were investigated. Combining the characteristics of this quarry with a summary of previous studies on environmental restoration work, this paper proposes a novel and systematic method that was comprehensively carried out through engineering and revegetation measures. The engineering measure, that is, the construction of an artificial slope by using local abandoned construction materials, solved the environmental problems in this quarry and provided site conditions favourable for revegetation. The revegetation measure restored the local ecosystem. This method provides both a new idea for the sustainable development of a mining area and a useful reference for analogous engineering cases.
FIGURE 1 in New semionotiform (Neopterygii) from the Tlayúa Quarry (Early Cretaceous, Albian), Mexico
FIGURE 1. Location map of the Tlayúa Quarry near Tepexi de Rodríguez, Puebla State, central Mexico.
FIGURE 9 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 9. Restoration drawings of Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany with the three different shields recovered. (A, C, E) Dorsal aspect. (B, D, F) Ventral aspect. (A, B) Specimen 1.587. (C, D) Specimen Pal.590-2, the rostrum is broken off. (E, F) Specimen 1.228.
FIGURE 6 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 6. Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany. (A–E) Digital microscopy image of isolated pleon in dorsal view of specimen 1.756. (A, B) Part. (C) Same as B, but structures colour marked. (D, E) Counterpart. (A, D) Non-polarized co-axial light. (B, E) Polarized co-axial light. Images of the counterpart are mirrored. (F–H) Details of specimen 1.529. (F) Detail of exopods of thoracic appendage. (G) Same as F, but colour marked. (H) Detail of the distal portion of an endopod of thoracic appendage, colour marked. Abbreviations: b = basipod; c = carpus; cr = caudal ramus; d = dactylus; en = endopod; ex = exopod; pp = pleopod; ps1–6 = pleon segment 1–6; pr = propodus; s = setae; t = telson; ts = telson spine.
FIGURE 18 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 18. Detailed images of the EFS of the SMA 0087 "Chris" samples. A, EFS of SMA0087 "Chris" femur (r), in which a cycle of faster growth is included (indicated by arrow). B, EFS of SMA 0087 "Chris" tibia (r), in which a cycle of faster growth is present (indicated by arrow). C, EFS of SMA 0087 "Chris" fibula (r), which possesses a cycle of faster growth (indicated by arrow). Images taken under plane-polarized light.
FIGURE 17 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 17. Images of all samples taken from SMA 0087 "Chris". A, femur (r). B, tibia (r). C, fibula (r). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, MC: Medullary cavity, RA: Remodeled area.
FIGURE 7 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 7. Images of all samples taken from SMA 0015 "David". A, femur (l). B, tibia (l). C, fibula (l). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, MC: Medullary cavity, RA: Remodeled area.
FIGURE 5 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 5. Images of all samples taken from SMA 0002 "E.T." A, humerus (r). B, femur (l). C, tibia (l). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, G: Bone tissue type G, MC: Medullary cavity, RA: Remodeled area.
FIGURE 4 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 4. Growth marks preserved in the femur of SMA 0087 "Chris". To study the cyclicity, all growth marks are considered. Multiple, closely spaced LAGs (arrows) were counted as one growth mark.
FIGURE 10 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 10. Band of secondary osteons in humerus SMA G50/91-1. The band of secondary osteons is located between the red lines. The area above the band of secondary osteons, marked by the dashed red line, consists of mainly primary bone with some isolated secondary osteons. In this area however, the density of secondary osteons is much lower than that seen in the secondary osteon band. Abbreviations; MC: Medullary cavity, RA: Remodeled area, SOB: Secondary osteon band.
FIGURE 6 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 6. Images of all samples taken from SMA 0007 "XL". A, humerus (r). B, ulna (l). C, tibia (?). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, MC: Medullary cavity, RA: Remodeled area.
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