Galerie d'images
Toutes les images de la base — taxons, formations et intervalles géologiques.
⚠ La fonctionnalité de récupération des images est en cours de test, des images non pertinentes peuvent apparaître.
2,598 image(s)
Pitekunsaurus macayai
Narambuenatitan palomoi & aucasaur
Size comparison of Venenosaurus
Dinosaur National Monument is a United States National Monument located on the southeast flank of the Uinta Mountains on the border between Colorado and Utah at the confluence of the Green and Yampa Rivers. Although most of the monument area is in Moffat County, Colorado, the Dinosaur Quarry is located in Utah just to the north of the town of Jensen, Utah. The nearest communities are Jensen, Utah, and Dinosaur, Colorado. The park contains over 800 paleontological sites and has fossils of dinosaurs including Allosaurus, Deinonychus, Abydosaurus (a nearly complete skull, lower jaws and first four neck vertebrae of the specimen DINO 16488 found here at the base of the Mussentuchit Member of the Cedar Mountain Formation is the holotype for the description) and various long-neck, long-tail sauropods. It was declared a National Monument on October 4, 1915. The rock layer enclosing the fossils is a sandstone and conglomerate bed of alluvial or river bed origin known as the Morrison Formation from the Jurassic Period some 150 million years old. The dinosaurs and other ancient animals were carried by the river system which eventually entombed their remains in Utah. The pile of sediments were later buried and lithified into solid rock. The layers of rock were later uplifted and tilted to their present angle by the mountain building forces that formed the Uintas during the Laramide orogeny. The relentless forces of erosion exposed the layers at the surface to be found by paleontologists. The dinosaur fossil beds (bone beds) were discovered in 1909 by Earl Douglass, a paleontologist working and collecting for the Carnegie Museum of Natural History. He and his crews excavated thousands of fossils and shipped them back to the museum in Pittsburgh, Pennsylvania for study and display. President Woodrow Wilson proclaimed the dinosaur beds as Dinosaur National Monument in 1915. The monument boundaries were expanded in 1938 from the original 80-acre (320,000 m2) tract surrounding the dinosaur quarry in Utah, to its present extent of over 200,000 acres (800 km²) in Utah and Colorado, encompassing the spectacular river canyons of the Green and Yampa. Though lesser-known than the fossil beds, the petroglyphs in Dinosaur National Monument are another treasure the monument holds. Due to problems with vandals, many of the sites are not listed on area maps. The "Wall of Bones" located within the Dinosaur Quarry building in the park consists of a steeply tilted (67° from horizontal) rock layer which contains hundreds of dinosaur fossils. The enclosing rock has been chipped away to reveal the fossil bones intact for public viewing. In July 2006, the Quarry Visitor Center was closed due to structural problems that since 1957 had plagued the building because it was built on unstable clay. The decision was made to build a new facility elsewhere in the monument to house the visitor center and administrative functions, making it easier to resolve the structural problems of the quarry building while still retaining a portion of the historic Mission 66 era exhibit hall. It was announced in April 2009 that Dinosaur National Monument would receive $13.1 million to refurbish and reopen the gallery as part of the Obama administration's $750 billion stimulus plan. The Park Service successfully rebuilt the Quarry Exhibit Hall, supporting its weight on 70-foot steel micropile columns that extend to the bedrock below the unstable clay. The Dinosaur Quarry was reopened in Fall 2011. en.wikipedia.org/wiki/Dinosaur_National_Monument en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_...
Recreación de Aragosaurus, Lourinhasaurus y Galvesaurus, los tres macronarios hallados en la Península Ibérica
Life restoration of the Triassic ichthyosaur Callawayia neoscapularis. Three specimens of this ichthyosaur are known, the holotype, ROM 41993, and two referred specimens, TMP 94.380.11 and 94.382.2. The skull is primarily based on ROM 41993, cross-checked against TMP 94.380.11 and TMP 94.382.2. The vertebral column is based primarily on TMP 94.382.2 as it is the most complete of these specimens, while the ribs were based on ROM 41993. The forelimbs were mainly based on those of ROM 41993, with TMP 94.380.11 used to determine their breadth. The hindlimbs were based on TMP 94.380.11, especially the more complete right hindlimb. ROM 41993 was cross-scaled with TMP 94.380.11 by the dimensions of the forelimb epipodials, which produced similar vertebral dimensions. The two TMP specimens were cross-scaled based on femoral length, also producing similar vertebral dimensions. Nicholls & Manabe (2001) stated that no wedge-shaped caudal centra supporting a tailbend were found and that there was no evidence of a bend being present, though considered that they might have existed in the gap in the preserved caudals. Since various other Triassic ichthyosaurs have since been found to have tail bends, one was illustrated here. A modest downturn of roughly 15° was illustrated, comparable to that in Guanlingsaurus, and the location of the bend within the gap in the preserved vertebrae matches well with the location of the bend in Guizhouichthyosaurus. References McGowan, C. (1994). "A new species of Shastasaurus (Reptilia: Ichthyosauria) from the Triassic of British Columbia: The most complete exemplar of the genus". Journal of Vertebrate Paleontology 14 (2): 168–179. DOI:10.1080/02724634.1994.10011550. Nicholls, E. L.; Manabe, M. (2001). "A new genus of ichthyosaur from the Late Triassic Pardonet Formation of British Columbia: Bridging the Triassic-Jurassic gap". Canadian Journal of Earth Sciences 38 (6): 983–1002. Ji, C.; Jiang, D.Y.; Hao, W.; Sun, Y. (2011). "True tailbend occurred in the Late Triassic: Evidence from ichthyosaur skeletons of South China". Acta Scientiarum Naturalium Universitatis Pekinensis 47 (2): 309–314. Shang, Q. H.; Li, C. (2009). "On the occurrence of the ichthyosaur Shastasaurus in the Guanling biota (Late Triassic), Guizhou, China". Vertebrata PalAsiatica 47 (3): 178–193.
Californosaurus perrini, an ichthyosaur from the Late Triassic of North America, pencil drawing
Isasicursor santacrucensis, an elasmarian ornithopod dinosaur.
Fostoria dhimbangunmal (3D digital rendering of LRF 3050; holotype) braincase in I, dorsal and J, ventral views. Scale bar = 10 cm.
Megacephalosaurus eulerti reconstructed skull in the Rocky Mountain Dinosaur Resource Center, Woodland Park, Colorado.
Ichthyosaurus communis, Early Jurassic of England. Digital.
Rebun Island lies in the Sea of Japan off the northwestern tip of Hokkaido and is part of the Rishiri-Rebun-Sarobetsu National Park. Momoiwa ("Peach Rock") was created in a relatively new era of Rebun Island's strata when underground magma pushed the earth's surface upward where it cooled into a huge spherical rock formation. Spheroidal joints (plate-shaped joints on the surface) peeled away like the skin of an onion, revealing the scree, which cooled at a slower rate than the surface, creating the columnar jointing that can be seen.
Vandret snit gennem glacialt forstyrret Selandien grønsand, Krauseparken i København; æsken måler 5 cm.
The Pectinida fossil Neithea in Lower Santonian bioclastic limestone. Found near Les Âges in the commune of Saint-Crépin-de-Richemont, Dordogne, France.
The productive layer of the Estonian oil shale deposit as seen in the Põhja-Kiviõli II opencast mine. The productive layer is made up of oil shale layers A through F1 together with the limestone layers in between. However, in some cases, layers F2, G and H (visible in the image, but not labeled) are also mined. The oil shale beds are marked on the image with capital letters, limestone layers are labeled with a combination of two capital letters, indicating at their location within the productive layer. Dashed lines indicate layer boundaries, which are harder to distinguish and are thus approximations. Stratigraphy: the productive layer of the Estonian oil shale deposit is part of the Kiviõli Member of the Viivikonna Formation. The formation belongs to Upper-Ordovician Kukruse Regional Stage (global Sandbian Stage). (Source reference: Heikki Bauert and Olle Hints "XI Baltic Stratigraphical Conference. Abstracts and Field Guide", Stop 4: Põhja-Kiviõli II open-pit mine, page 85, figure 4.4).
Cadurcotherium nouleti. Dedicated to Jean-Baptiste Noulet. Paratype. Rupelian (33,9 to 28,4 Ma)
Close up of the Eulithomyrmex rugosus holotype head. Museum of Comparative Zoology specimen UCM17019. Priabonian; Florissant Formation, Colorado, USA
The Holotype batomorph tooth of Antiquaobatis grimmenensis from the Late Pliensbachian (spinatum) of Grimmen (Mecklenburg-Western Pomerania, Germany).
A life restoration of the Pennsylvanian colosteid Colosteus; depicted in mostly black with striking red coloration stretching around the side of its torso.
Cliff at Filey Brigg in North Yorkshire, England (at low tide). Soft Quaternary deposits lie on top of horizontal layers of Upper Jurassic (Oxfordian) sedimentary rocks.
nodes 52-53: Hesslerella shermani, FMNH PE 16527, latex cast whitened with ammonium chloride, scale bar image credit T. Hegna
From El Plomo, Agua Amarga basin, Mesinnian of southern Spain.
"Life in the Mesozoic" exhibit, Burke Museum, University of Washington, Seattle, Washington.
Dies ist die deutsche Übersetzung des Bildes und der Bildbeschreibung aus dem Englischen. Entwicklung der globalen Erwärmung Letzte 2000 Jahre Dieses Bild zeigt den Vergleich von 10 verschiedenen Rekonstruktionen des Temperaturmittelwerts während der letzten 1000 Jahre. Neuere Rekonstruktionen erscheinen im Vordergrund und in rötlicheren Farben, ältere im Hintergrund und in bläulicheren Farben. Außerdem ist eine Kurve historischer Temperaturmessungen in schwarz dargestellt. Die mittelalterliche Warmzeit und kleine Eiszeit sind markiert zu den Zeiten, bei denen angenommmen wird, daß sie dann stattgefunden haben, obwohl noch immer darüber gestritten wird, ob es wirklich globale oder nur lokale Ereignisse waren. Der ungeglättete Wert für das Jahr 2004 ist auch dargestellt zum Vergleich. (Image:Instrumental_Temperature_Record_de.png zeigt, wie 2004 sich zu anderen Jahren der nahen Vergangenheit verhält). Es ist nicht bekannt, welche dieser Rekonstruktionen eine genaue Repräsentation der Klimageschichte darstellt, falls das überhaupt für eine zutrifft. Diese Kurven stellen jedoch eine faire Repräsentation des Bereichs der Ergebnisse in der veröffentlichten wissenschaftlichen Literatur dar. Daher ist es wahrscheinlich, daß solche Rekonstruktionen - egal ob genau oder nicht - eine bedeutende Rolle spielen werden in den fortlaufenden Diskussionen über globale Klimaänderungen und globale Erwärmung. Die Rohdaten für jede Rekonstruktion wurden geglättet mit einem Gauß-Filter mit 5 Jahren Varianz und gleitendem Mittelwert. Außerdem wurde jede Rekonstruktion so angepaßt, daß ihr Mittelwert dem Mittelwert der instrumentell gemessenen Daten entspricht im Zeitraum der Überlappung. Die Varianz (d.h. die Skala der Schwankungen) wurde nicht angepaßt (mit einer unten angegebenen Ausnahme). Man beachte, daß viele Rekonstruktionen des früheren Klimas erhebliche Fehlerbalken zeigen, die in diesem Bild nicht dargestellt sind. Benutzte Rekonstruktionen in der Reihenfolge von ältester zu neuester Veröffentlichung: #(dunkelblau 1000-1991): #(blau 1000-1980): #(hellblau 1000-1965): #(sehr helles blau 1402-1960): #(hellgrün 831-1992): #(gelb 200-1980): #(orange 200-1995): #(rotorange 1500-1980): #(rot 1-1979): #(dunkelrot 1600-1990): (schwarz 1856-2004): Instrumentelle Daten wurden gemeinsam zusammengestellt vom Climatic Research Unit und dem UK Meteorological Office Hadley Centre. Benutzt wurde das Global Annual Average data set TaveGL2v [1]. Die Dokumentation für das neueste Update der instrumentellen Daten von CRU/Hadley erscheint in: #Die Daten von Moberg et al. wurden direkt aus der Begleitinformation zum Artikel in Nature entnommen. #Die Daten für Oerlemans wurden zur Verfügung gestellt von William M. Connolley. #Esper et al. berichteten nur von "willkürlichen" Einheiten, weshalb die Varianz dieser Daten so skaliert wurde, daß sie derjenigen der instrumentellen Daten während des Überlappungszeitraums entspricht. #Wenn ein Artikel mehrere Rekonstruktionen enthielt, wurden die globalen jährlichen mittleren Temperaturen verwendet. Falls diese fehlten, wurden die jährlichen Mittelwerte für die Nordhalbkugel verwendet. #Vier Datensätze, die be [2] erscheinen, wurden aus folgenden Gründen nicht zur Erzeugung dieses Diagramms benutzt: ##Mann et al. 98 wurde nicht aufgenommen, weil Mann et al. 99 diese Daten erweitert und neue Messungen enthält. ##Briffa et al. 98 wurde nicht aufgenommen, weil Briffa et al. 2001 diese Daten erweitert und neue Messungen enthält. ##Pollack et al. 98 wurde nicht aufgenommen, weil die berichteten Daten nicht in einer für ein Diagramm leicht zu verwendenden Form sind. ##Mann et al. 2000 wurde nicht aufgenommen, weil es keine Originalrekonstruktion enthielt, die mindestens die Nordhalbkugel überdeckt.
"Stay at Home" at Lower Broad Street (Ludlow)
Fossil shell of Aulacostephanus yo from France, on display at Gallery of Paleontology and Comparative Anatomy, Paris.
Interpretation of the Hirnantian extinction and replacement of the Diplograptina (black) by the Neograptina (gray) (adapted from Bapst & others, 2012, fig. 1).
Abrytusites julianyi (Honnorat-Bastide), Upper Hauterivian, Pali lula, Montana (Coll. G. Mandov) at the Sofia University 'St. Kliment Ohridski' Museum of Paleontology and Historical Geology
Chart showing the correlation between international and North American Devonian stage names. Figure modified from Swezey (2002). US Geological Survey.
Chart showing the correlation between international and North American Devonian stage names. Figure modified from Swezey (2002). US Geological Survey.
Chart showing the correlation between international and North American Devonian stage names. Figure modified from Swezey (2002). US Geological Survey.
Monte San Nicola in Sicily, Italy, south of Butera in the province of Caltanissetta. The red line below the '5' on the rock marks the basis of the Gelasian (Lower Pleistocene), 2.58 million years ago. The Gelasian is a geologic age named after the nearby city of Gela in the south of Sicily.
Clavo dorado que marca el GSSP del Floiense (Ordovícico inferior) en la cantera Diabasbrottet (Hunneberg, Suecia)
Fossiliferous limestone of the Roca Formation (Danian) in Barda Norte, the type locality of the Roca Formation, General Roca, Río Negro, Patagonia, Argentina.
Simplified stratigraphic chart of the Angoumian, a Turonian sedimentary group in the northern Aquitaine Basin, France. Facies changes are not indicated.
Fossil of Cainotherium, an extinct mammal https://hdl.handle.net/21.12123/66925 in ferruginous rock of Oligocene (Chattian) age from Ingolstadt in Bavaria, Germany - Took the photo at Museon museum, Den Haag
Pilares de Los Gigantes, provincia de Río Negro, correspondientes la la Formación Candeleros.
It is the southern flank of a syncline Campanian, Maastrichtian and Eocene age(35-55 million ys)flakes represented by conglomerates overlying gypsum marls in the syncline; but also an undeveloped alabaster deposit giving way to a beautiful landscape
Coleia gigantea. Stage : Callovian between 164.7 ± 4.0 Ma (million years ago) and 161.2 ± 4.0 Ma (million years ago).
Berberis berberidifolia fossil leaf of Burdigalian stage in the early Miocene epoch, from a brown coal mine in Bilina, Czech Republic.
A lampshell of the genus Acanthothiris, Class Rhynchonellata, Order Rhynchonellida, Family Acanthothirididae, 20mm along the axis, view of the brachial valve, from Woodeaton, Oxfordshire, UK, middle Middle Jurassic (Bathonian)
Kerberos langebadreae, big hyainailourid hyaenodont from the Middle Eocene - Bartonian- of Montespieu (Tarn, France)
Oolitic limestone (Sarthe, France)
Arisierpeton simplex dentaries
Le géologue qui crée l'étage Aquitanien à Saucats, en 1858
Figure 36: Artist’s interpretation of the early Albian, volcaniclastic, floodplain palaeoenvironment within the Australian-Antarctic rift graben, in the region of Eric the Red West. Scene depicting two individuals of Diluvicursor pickeringi on the cutbank of a high-energy meandering river, regional floral components and distant rift margin uplands. Floral components potentially included forest trees of Araucariaceae (Agathis and Araucaria), Podocarpaceae and Cupressaceae and lower story/ground cover plants, including pteridophytes (ferns, including equisetaleans), hepatics, lycopods, cycadophytes, bennettitaleans, seed-bearing fern- or cycad-like taeniopterids and early Australian angiosperms. Artwork by P. Trusler, with permission.
A render of Miolingian (Drumian) earth with focus on the continent of Laurentia, a cyclone is visible to the north. Intended to represent Wheeler Shale deposition
Life reconstruction of Maleriraptor kuttyi with the unaysaurid sauropodomorph Jaklapallisaurus asymmetricus, both from the lower Norian Upper Maleri Formation of south-central India.
Reconstruction of Camelotia borealis, a "melanorosaurid"
Size of Austroraptor cabazai compared to a human, a species of Dromaeosaurid Unenlagiinae who lived during the Cretaceous period in Argentina, more precisely in the Allen Formation.
Reconstructions of diplodocoid skulls used in this analysis. Reconstructions of Nigersaurus and Diplodocus modified from [10] and [34], respectively. All other reconstructions based on material listed in Table S1. Skulls scaled to equivalent anteroposterior lengths.