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.
2,142 image(s)
The ankle of Camposaurus arizonensis (UCMP 34998, reversed). The fossils is shown anterior, medial, posterior, lateral, and ventral views, from left to right. The arrow indicates anterior direction.
Lepidus and Octavian. Spring-summer 42 BC. AR Denarius (16mm, 3.87 g, 8h). Military mint traveling with Lepidus in Italy. Bare head of Lepidus right / Bare head of Octavian right. Crawford 495/2a; CRI 140; Sydenham 1323; RSC 2a. Good VF, toned. Exceptional portrait of Lepidus. This issue was struck by Lepidus to commemorate the foundation of the Second Triumvirate, and was probably struck from the proceeds of the proscriptions in preparation for the campaign against Brutus and Cassius in 42 BC. Lepidus is shown with the title Pontifus Maximus, an office which he received after the assassination of Julius Caesar and held until his death in 12 BC.
Holotype fossil specimen SMNS 12591 of Procompsognathus
Holotype fossil specimen SMNS 12591 of Procompsognathus
Restoration of Lucianovenator bonoi based on images of known remains and related genera. Proto-feathers for insulation in coelophysids and other early theropods have been supported by this study:[1]
Skull diagram of Panguraptor lufengensis illustrating known material. Scale bar is 1 cm.
Skeleton outline of Dracoraptor hanigani. Bones highlighted green for present, orange for external moulds and blue for tentatively identified bones. Many unidentified or uncertain elements have been omitted.
Holotype specimen of Notatesseraeraptor frickensis, a theropod dinosaur, in Sauriermuseum Frick .
Tachiraptor admirabilis gen et sp. nov. Holotype right tibia (IVIC-P-2867) in (a) lateral (proximal portion), (b) proximal, (c) lateral, (d) distal and (e) cranial (distal portion) views. Referred left ischium (IVIC-P-2868) in (f) lateral view. Abbreviations: ab, astragalar buttress; cc, cnemial crest; ai, cranial emargination; cn, caudal notch; fc, fibular condyle; fcr, fibular crest; ia, iliac articulation; in, intercondylar notch; it, incisura tibialis; keg, ‘knee extensor groove’; lg, longitudinal groove; lk, lateral kink; mc, medial condyle; om, outer malleolus; op, obturator plate; pp, pubic peduncle; pvr, ‘postero-ventral ridge’; rd, ridge; tn, tibial notch; vr, ventral ridge.
The skull of Zupaysaurus rougieri (A) in right lateral view. Scale bar equals 5 cm. Cropped from Figure 2 in the source. anfe - antorbital fenestra emf - external mandibular fenestra itf - infratemporal fenestra or - orbit
A replica of MIWG 1530, the holotype of the maniraptoran dinosaur Yaverlandia bitholus. As seen from two angles.
Metatarsals of Aepyornithomimus tugrikinensis. (a), in anterior, (b), in posterior, (c), in medial, and (d), in lateral views. Abbreviations: (Mt II, Mt III, and Mt IV), the second, the third, and the fourth metatarsals.
Skull diagram featuring the holotype skull (ROM 1790) of the ornithomimid Rativates evadens, from the Late Cretaceous period. Abbreviations: d, dentary; f, frontal; l, lacrimal; m, maxilla; n, nasal; pm, premaxila; ps, paraphenoid.
Reconstruction of the terrestrial paleoenvironmental setting of the Sao Khua Formation by Renata Cunha. In the center, a generalized spinosaurid feeds on a sauropod. This trophic relationship is hypothesized based on isolated tooth crowns found in association with a sauropod skeleton [67]. In the background, a small pack of the ornithomimosaur theropod Kinnareemimus. Both sauropods and ornithomimosaurs (as part of the “herbivorous” theropods) were found to be positively associated with terrestrial paleoenvironments by Butler and Barrett [15]. (cropped from File:Spinosaurid and Kinnareemimus.PNG)
Holotype of Shenzhousaurus orientalis on display at the Geological Museum of China.
An overview of the known fossil material of Tyrannomimus fukuiensis. Fossil specimens shown in are not in the same scale. The bar is scaled for the paratype (FPDM-V-10295). The holotype (FPDM-V-11333) and paratype in are colored in red and blue, respectively. The right femur in is mirrored from the left one (FPDM-V-11338).
Photo of the partial holotype skeleton of the ornithomimosaur Garudimimus brevipes, as mounted in the Mongolian Natural History Museum. Scan of physical photograph.
Skeletal reconstruction of mexican deinocheirid, Paraxenisaurus normalensis.
Reconstruction of Minimocursor phunoiensis gen. et sp. nov. (PRC 150) in left lateral view (except reversed images of the right jugal). Recovered elements of the holotype shown in white (A); holotype with referred materials, which are not to scale, shown in light purple (B). Drawings by Wongwech Chowchuvech.
Hypothetical restoration of the basal ceratopsian Micropachycephalosaurus hongtuyanensis.
Mounted skull of EMK 0012 (Lokiceratops rangiformis holotype). (A) Mounted skull in posterior view. (B) Mounted skull in right lateral view. (C) Mounted skull in dorsal view. (D) Mounted skull in left lateral view. Areas in gray are reconstructed. Minor changes from side to side and in the orbits are the result of post-depositional deformation. Photos contain parallax. Scale bar equals 1 m.
Menefeeceratops is a genus of ceratopsid dinosaur from the Menefee Formation in the United States. It is is believed to have been approximately 4 m long, and had two large horns above the eyes like other ceratopsians. Menefeeceratops was one of the earliest and most basal known members of the ceratopsids, and the oldest known centrosaurine. Its age and location was instrumental in helping to understand the evolution and diversification of the centrosaurine dinosaurs.
Skeletal diagram of Wendiceratops pinhornensis, known material in white, inferred in grey. Modified from https://commons.wikimedia.org/wiki/File:Wendiceratops_skeletal_reconstruction.PNG
Reconstruction of the skull of Spinops sternbergorum gen. et sp. nov. from the Campanian of Dinosaur Provincial Park, southern Alberta, in right lateral view. Preserved elements are stippled; missing portions are dotted and modeled after Centrosaurus apertus.
Holotype cranial Material and Cranial Reconstruction of Machairoceratops cronusi (UMNH VP 20550) gen. et sp. nov. Recovered cranial elements of Machairoceratops in right-lateral view, shown overlain on a ghosted cranial reconstruction (A). The jugal, squamosal and braincase are all photo-reversed for reconstruction purposes. Machairoceratops cranial reconstruction in dorsal (B), and right-lateral (C) views. Green circle overlain on the ventral apex of the jugal highlights the size of the epijugal contact scar (ejcs). Abbreviations: BC, braincase; boc, basioccipital; bpt, basipterygoid process; ej, epijugal; ejcs, epijugal contact scar; j, jugal; lpr, lateral parietal ramus; lsb, laterosphenoid buttress; m, maxilla; n, nasal; o, orbit, oc, occipital condyle; oh, orbital horn; on, otic notch; p, parietal; pf, parietal fenestra; pm, premaxilla; po, postorbital; poc, paroccipital process; p1, epiparietal locus p1; sq, squamosal. Scale bars = 0.5 m.
Left lateral parietal bar of Stellasaurus ancellae holotype MOR 492 in dorsal and ventral views. EPS, epiparietosquamosal; PSC, parietosquamosal contact. Scale bar 10 cm. Parietal line drawing modified from Evans & Ryan [22], Public Library of Science (PLoS), used under Creative Commons Attribution 4.0.
Terminocavus sealeyi holotype NMMNH P-27468 parietal. Dorsal (A) and ventral (B) views. Paired ep1 are deflected dorsally. em, median embayment of the posterior bar; ep, epiparietal loci numbered by hypothesized position (no epiossifications are fused to this specimen); f, parietal fenestra; lb, lateral bar; L-lr/R-lr, Left/Right lateral rami of the posterior bar; mb, median bar; te, tapering lateral edges of the median bar. Scalebar = 10 cm. Reconstruction adapted from Lehman (1998).
Photograph of the holotype skull of Titanoceratops ouranos, from the late Campanian aged Kirtland/Fruitland beds of New Mexico, USA. Photograph by Nick Longrich
Navajoceratops sullivani holotype SMP VP-1500 parietal. Dorsal (A) and ventral (B) views. Cross section of median bar (mb) illustrated on dorsal view. Ep1 mostly removed during extraction or preparation (see Fig. S4 for original extent). em, median embayment of the posterior bar; ep, epiparietal loci numbered by hypothesized position (no epiossifications are fused to this specimen); f, parietal fenestra; L-lr/R-lr, Left/Right lateral rami of the posterior bar; te, tapering lateral edges of the median bar. Scalebar = 10 cm. Reconstruction adapted from Lehman (1998).
Ceratopsipes goldenensis Lockley & Hunt, 1995 - ceratopsian dinosaur trackway in the Cretaceous of Colorado, USA. Ceratopsians are the "horned dinosaurs". They were large, quadrupedal, herbivorous dinosaurs having a beaked skull and a frill - an extension of bone behind the skull that partially covered the neck. Ceratopsian dinosaurs are known from the Jurassic and Cretaceous. The last members of the group died out at the Cretaceous-Tertiary boundary, 65 million years ago. Seen here is a ceratopsian dinosaur trackway. Ceratopsian footprints are very rare. The best examples are in Colorado's Laramie Formation, a nonmarine, coastal plain to deltaic succession of mostly mixed siliciclastic sedimentary rocks - sandstones, siltstones, claystones, and coals. The footprints here consist of convex bulges on the basal surfaces of structurally-tilted sandstone beds. The ichnospecies Ceratopsipes goldenensis was named based on footprints at this locality. The trackmaker was very likely Triceratops, the # 1 most famous ceratopsian dinosaur. From on-site signage: Triceratops Tracks Several tracks of Triceratops, or a closely related horned dinosaur were first discovered in this area and named Ceratopsipes goldenensis (meaning tracks of a horned dinosaur from Golden). By happy coincidence, the first Triceratops known to science also comes from the greater Denver area near 13th Avenue and Federal Blvd. Growing to a length of almost 25 feet, Triceratops and other members of the horned dinosaur family were herbivorous animals that roamed in herds. Their trademark horns and frills that covered their necks probably served for defense. A replica Triceratops skull is on display in the clubhouse at the Fossil Trace Golf Club. These tracks (identified by small signs) help us understand that Triceratops walked with a narrow gait and erect front limbs than with a wide, sprawling gait as previously depicted. In 1887, the first Triceratops bones known to science were also discovered locally at a site near 13th Avenue and Federal Boulevard in Denver. Nearby one may see many other traces of life such as burrows, probably made by invertebrates and impressions of plant debris. Note that you are looking at all tracks and traces from the underside - in negative aspect - what one might call a worm’s eye view. All of these trace fossils indicate that the Golden area once had a warm, temperate to subtropical climate. Classification: Animalia, Chordata, Vertebrata, Reptilia, Archosauria, Dinosauria, Ornithischia, Marginocephalia, Ceratopsia, Ceratopsidae Stratigraphy: Laramie Formation, Maastrichtian Stage, upper Upper Cretaceous Locality: outcrop along Triceratops Trail, Parfet Prehistoric Preserve, southern side of the town of Golden, Colorado, USA (~vicinity of 39° 44' 35.24" North latitude, 105° 13’ 09.69" West longitude) Some info. from: Lockley & Hunt (1995) - Ceratopsid tracks and associated ichnofauna from the Laramie Formation (Upper Cretaceous: Maastrichtian) of Colorado. Journal of Vertebrate Paleontology 15: 592-614.
Skeletal restoration showing the known material of Chaoyangsaurus young.
Artistic reconstruction of the head of an early ceratopsian Xuanhuaceratops niei based on the currently known fossil material and the cranial remains of other chaoyangsaurids.
Artistic reconstruction of the head of an early ceratopsian Xuanhuaceratops niei based on the currently known fossil material and the cranial remains of other chaoyangsaurids.