Find research datasets worth reusing

Fig. 10 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 10. Thin section of the tibia GPIT/RE/3724 of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania, cut within the lower third of the long bone shaft. Most of the marrow cavity is filled by fine, calcareous marl. Note that the top of the cavity has been filled subsequently by calcite crystals, which indicates that the bone was embedded in the substrate as oriented as in this image.

Fig. 9 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 9. Fully prepared block MB.R.1910 (WJ5840) of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania, within the bonebeds.

Fig. 11. Associated skull SMNS 52348 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 11. Associated skull SMNS 52348 of a juvenile individual of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania. A. The lower jaw bones at the left were detached from the specimen during preparation and are reassembled in this image. All currently identifiable elements are framed and labeled. B. Most of the unlabeled elements in the left center between the right postorbital, left exoccipital, left frontal, and left prefrontal (marked by "?") likely belong to the palate of the skull and may be identifiable after further preparation. Abbreviations: c2–c4, cervical vertebrae 2–4; l., left; r., right.

Fig. 16. A in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 16. A group of blue wildebeest (Connochaetes taurinus) crossing the Mara River, East Africa. Photo by Eric Inafuku, Wikimedia commons (https:// commons.wikimedia.org/wiki/File:Connochaetes_taurinus_-Wildebeest_crossing_river_-East_Africa.jpg).

Fig. 7 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 7. Field sketches by Hans Reck (Reck, 8th report, September 15, 1912) on the spatial relationships of the two main bonebeds. The two main bonebeds (BB-3 and BB-4) in top (A) and profile (B) views. The indicated large bones in between are labelled with "dinosaur shoulder blade and vertebra" (in German) (A) or simply "Dinos." (B) and indicate the discovery of sauropod remains in the quarry (H. Reck, 8th report, September 15, 1912; Pal. Mus SII, Tendaguru-Expedition 9.5, Archive of the Historical Division of the MfN).

Fig. 6 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 6. Scanned image of the first two pages of the field catalogue of Hans Reck from 1912. The first note at the top of the right page says: "19. June 1912 – The quarry Ig will be renamed W.J. due to the ongoing numbering of the bones" (Reck, 1912–1913. GTE field catalogue, Pal. Mus SII, TendaguruExpedition 9.3, Archive of the Historical Division of the MfN)

Fig. 5 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 5. Simplified composite section of the Tendaguru Formation in the type area (based on Bussert et al. 2009). The position of the Ig/WJ-bonebeds is only approximate, based on the field results of the German-Tanzanian Tendaguru Expedition 2000 (Aberhan et al. 2002). Abbreviations: Cl, clay; cS, coarse-grained sand; fS, fine-grained sand; G, gravel; mS, mediumgrained sand; Si, silt.

Fig. 2 in A new caenogastropod from the upper Rhaetian of Lombardy: Palaeobiogeographical history and implications for the Early Jurassic gastropod recovery

Fig. 2. Comparison between the holotype of zygopleurid? gastropod Cerithium? lateplicatum Klipstein, 1843 and the specimens illustrated by Bandel 1995), here ascribed to a tofanellid Camponaxis bandeli sp. nov.; lower Carnian, eastern Dolomites (Southern Alps, northern Italy). A. Fragmentary type specimen (NHMUK PI OR 35701) of Cerithium? lateplicatum, original illustration from Klipstein (1843: pl. 11: 35). B, C. Camponaxis bandeli sp. nov. B. Holotype, adult shell (RGM 219 039), from Bandel (1995: pl. 14: 5). C. Paratype, juvenile shell (RGM 219 040), from Bandel (1995: pl. 14: 3). Reproduced accordingly to CCBY 4.0 license.

Fig. 4 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 4. Measurements of a right femur of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania, visualized from a CT scan of the bamboo corset Ig 133, using the line measurement tool in Osirix. A. Dashed line marks maximum length of femur. B. Dashed line marks distal width of femur (see also Material and methods).

Fig. 2 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 2. Oil painting by Ina Reck (1912), which depicts the excavations at the Ig/WJ-site (from MfN collections, PM_B_VII_9_Reck).

Fig. 12 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 12. Examples of articulated or closely associated skeletal elements of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania. A. The 7–15th dorsal vertebrae (anterior to the left) of individual dy II (acronym for individual dy II used by Janensch 1955, today catalogued with the collection numbers MB.R.1586.1–9). B. Unlabeled posterior dorsal vertebrae from the SMNS collections in ventral view. C. Closely associated right angular and surangular MB.R.1335. D. Incomplete articulated left pes GPIT/RE/3452 in ventral (D1), dorsal (D2), and medial (D3) views.

Fig. 14 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 14. Examples of states of bone preservation of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania. A. Several tibiae originally labelled with low Ig numbers showing multiple breaks perpendicular to their long axis. B. Isolated shaft of the left femur GPIT/RE/3446 in medial view with its proximal and distal ends broken off but with excellent preservation of the bone surface and of the delicate 4th trochanter. C. The right ilium GPIT/RE/6544 with the usual broken off preacetabular process and net-like surface cracks on the otherwise well-preserved lateral bone surface. D. Dorsal vertebra GPIT/RE/5462 of a juvenile individual in anterior view with plastic deformation of the left diapophysis. The deformation of this side is visible in two additional, potentially associated dorsal vertebrae. E. Unlabeled right humerus from the SMNS collections with well-preserved articular ends but with a distorted and compressed midshaft. F. Excellent preservation of the right calcaneum GPIT/RE/5808 in lateral view. G. The left jugal MB.R.1333 in lateral view with numerous diagenetic cracks which were resealed in situ by calcite. H. Right quadrate MB.R.3478 in lateral view with its cotylar head and upper part of the anterolateral wing broken off and slightly displaced forward whereas the surface of the bone and its delicate processes are generally well preserved. Scale bars 10 mm.

Fig. 1 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 1. Location of the Ig/WJ-locality. A. Position of the Tendaguru locality in Tanzania, redrawn from Google Maps and on the basis of locality information of Aberhan et al. (2002). B. Geological map of the Tendaguru area with main stratigraphic units, the position of quarry Jg/WJ is marked with an asterisk, and some other important quarries from the German Tendaguru Expedition (1909–1913) are labelled with their respective letters. Roads are marked by dashed lines. Data are from Janensch (1925b), Heinrich 1999b), and Aberhan et al. (2002). The names of stratigraphic units are from Bussert et al. (2009).

Fig. 3 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 3. Original, unopened bamboo corsets containing bones of ornithopod dinosaur Dysalotosaurus lettowvorbecki Pompeckj, 1920, from Kimmeridgian, Late Jurassic of Tendaguru, Tanzania, which are housed in the collection of fossil reptiles at the MfN. A. Stored as a stack. B. Bamboo corset in lateral view. C. Showing the labelling on the front side. The bamboo corsets are labelled with the quarry numbers and field numbers as assigned to single fossil blocks. Reference to specimens is not possible, because most of them are unprepared sediment blocks. D. CT slice exposing cross-section through bamboo corset Ig 88, bones are in white whereas lighter materials such as clay, cushioning with grass, and bamboo sticks are displaying around.

Fig. 8 in Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania

Fig. 8. Tentative reconstruction of the spatial relationships of the four bonebeds of the Ig/WJ-quarry according to the available descriptions and dates of Werner Janensch and Hans Reck. The actual shape and absolute sizes of the bonebeds are schematic and speculative. Top (A) and profile (B) views are in relation to the cardinal points. Note that the actual stratigraphic level of BB-1 in relation to BB-2 is uncertain (double headed arrow). The dotted ellipses show the approximate position of the large, possibly sauropod, bones found in September 1912 within the otherwise bone-free layer in between BB-3 and BB-4 including a scapula and a cervical vertebra. BB, bonebed. See Fig. 7 for comparison.

Fig. 5 in A new caenogastropod from the upper Rhaetian of Lombardy: Palaeobiogeographical history and implications for the Early Jurassic gastropod recovery

Fig. 5. Palaeogeographical distribution of Ederazyga during the Late Triassic. Map modified from the late Norian maps of Dercourt et al. (2000) and Barrier and Vrielinck (2008).

Fig. 6 in A new caenogastropod from the upper Rhaetian of Lombardy: Palaeobiogeographical history and implications for the Early Jurassic gastropod recovery

Fig. 6. Original illustrations of the Early Jurassic Zygopleuralike species probably closely related to Ederazyga. A, B. Chemnitzia moorei Gemmellaro, 1878 (pl. 6: 4, 5), Sinemurian, Rocca Busambra (northwestern Sicily, southern Italy). C. Chemnitzia tatia Gemmellaro, 1878 (pl. 6: 1–3), Sinemurian, Rocca Busambra (northwestern Sicily, southern Italy), in apertural view (C1), detail showing the spiral ornament (C2), and dorsal view (C3). D. Chemnitzia polyplecta Gemmellaro, 1878 (pl. 6: 7, 8), Sinemurian, Rocca Busambra (northwestern Sicily, southern Italy), in apertural (D1) and dorsal (D2) views. E. Chemnitzia catacyclus Di Stefano, 1887 (pl. 2: 7b), Sinemurian, Taormina (eastern Sicily, southern Italy). F, G. Specimens figured by Dubar (1948: pl. 7: 11a, 12) as Zygopleura paradisi (Böhm, 1884), lower Pliensbachian (F) and lower Toarcian (G), Djebel BouDahar, (High Atlas, Morocco). H, I. Chemnitzia appenninica Gemmellaro, 1878 (pl. 9: 1, 2), Sinemurian, Rocca Busambra (northwestern Sicily, southern Italy). J. Chemnitzia veturia Gemmellaro, 1878 (pl. 6: 6), Sinemurian, Rocca Busambra (northwestern Sicily, southern Italy). K. Specimen figured by Fucini (1895: pl. 12: 5, 5a) as Zygopleura polyplecta (Gemmellaro, 1878), Sinemurian, Monte Pisano (Tuscany, central Italy). L. Zygopleura subnodosa (d'Orbigny, 1850), holotype figured by Fischer and Weber (1997: pl. 1: 8), upper Pliensbachian, Calvados (northern France), in dorsal (K1) and apertural (K2) views. M, N. Zygopleura vinosimonensis Fischer and Weber, 1997, syntypes figured by Cossmann (1902: pl. 4: 2, 4) as Zygopleura subnodosa, Hettangian, Vendée (western France).

Fig. 4 in A new caenogastropod from the upper Rhaetian of Lombardy: Palaeobiogeographical history and implications for the Early Jurassic gastropod recovery

Fig. 4. Zygopleurid? gastropod Ederazyga lateplicata (Klipstein, 1843); lower Carnian, eastern Dolomites (Southern Alps, northern Italy). A. Holotype NHMUK PI OR 35701, incomplete shell, in apertural (A1), dorsal (A2), and subdorsal (A3) views, detail of the ornament (A4). B. Original labels of the holotype (the label at the top shows an incorrect inventory number). C. Illustration of a specimen classified by Kittl (1894: pl. 4: 28) as Katosira? lateplicata. D. Original illustration of the specimen MRZ3711, ascribed by Zardini (1978: pl. 28: 8a, b) to Katosira seelandica var. alta, incomplete shell, in apertural (D1) and dorsal (D2) views, reproduced with permission Tipografia Ghedina Snc.

opencc-by-4.0Aug 2021View details →

Fig. 3 in First record of chimaeroid fish Ischyodus from the Upper Jurassic of southwestern Gondwana

Fig. 3. Chimaeroid fishes from Mina Del Fierro, Andes Cordillera, Región del Maule, Chile; Baños del Flaco Formation, Tithonian (Upper Jurassic). A. Ischyodus townsendi (Buckland, 1835) (MHNC.35.444); two articulated mandibular plates in basal view. B. Ischyodus sp. (MHNC.35.445); ventral view of the bony contour of a right palatine attached to the matrix, preserving the occlusal surface of the tritors. Abbreviations: ait, anterior inner tritor; aot, anterior outer tritor; bk, beak; lm, left mandibular; mt, median tritor; out, outer tritor; pit, posterior inner tritor; plm, prominence of the labial margin; pot, posterior outer tritor; r, ridges; rm, right mandibular; syt, symphyseal tritor. Photographs (A1, B1), schematic illustrations (A2, B2).