os

Partie anatomique

76 image(s) · 52 Actualités

Galerie d'images

Oneirosaurus caballeroi holotype IGMp879524. A, photograph, drawing and interpretative scheme of the specimen without left mandibular ramus, in right lateral view. B, photograph, drawing and interpretative scheme of the specimen without left mandibular
ramus, in left lateral view. Gray fill, sediment; pattern fill, broken bone surface; black, empty space. Scale bars: A = 50 mm; C-D = 30 mm. Abbreviations: an, angular; avc, anterior aperture of the vidian canal; bo, basioccipital; bptm, basipterygoid meniscus; bs, basisphenoid; c, coronoid; d, dentary; ec, ectopterygoid; ep, epipterygoid; ex, exoccipital; f, frontal; im, internal auditory meatus; is, interorbital septum; j, jugal; la, lacrimal; m, mandible; mx, maxilla; na, nasal; op, opisthotic-exoccipital; p, parietal; par, prearticular; pl, palatine; pmx, premaxilla; pof, postorbitofrontal; pr, prootic; prf, prefrontal; ps, parasphenoid; pt, pterygoid; pvc, posterior aperture of the vidian canal q; quadrate; rv, right vomer; sa, surangular; scp, sclerotic plate; smx, septomaxilla; so, supraoccipital; sp, splenial; stp, stapes; VII, IX-XII, exit of cranial nerves.
Taxons Oneirosaurus

Oneirosaurus caballeroi holotype IGMp879524. A, photograph, drawing and interpretative scheme of the specimen without left mandibular ramus, in right lateral view. B, photograph, drawing and interpretative scheme of the specimen without left mandibular ramus, in left lateral view. Gray fill, sediment; pattern fill, broken bone surface; black, empty space. Scale bars: A = 50 mm; C-D = 30 mm. Abbreviations: an, angular; avc, anterior aperture of the vidian canal; bo, basioccipital; bptm, basipterygoid meniscus; bs, basisphenoid; c, coronoid; d, dentary; ec, ectopterygoid; ep, epipterygoid; ex, exoccipital; f, frontal; im, internal auditory meatus; is, interorbital septum; j, jugal; la, lacrimal; m, mandible; mx, maxilla; na, nasal; op, opisthotic-exoccipital; p, parietal; par, prearticular; pl, palatine; pmx, premaxilla; pof, postorbitofrontal; pr, prootic; prf, prefrontal; ps, parasphenoid; pt, pterygoid; pvc, posterior aperture of the vidian canal q; quadrate; rv, right vomer; sa, surangular; scp, sclerotic plate; smx, septomaxilla; so, supraoccipital; sp, splenial; stp, stapes; VII, IX-XII, exit of cranial nerves.

os écaille dessin holotype +2
Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2]


↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7

↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22
Taxons Edmontosaurini

Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2] ↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7 ↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22

os musée Hell Creek fossile +10
Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2]


↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7

↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22
Taxons Kritosaurini

Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2] ↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7 ↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22

os musée Hell Creek fossile +10
Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2]


↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7

↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22
Taxons Saurolophini

Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2] ↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7 ↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22

os musée Hell Creek fossile +10
Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2]


↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7

↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22
Taxons Brachylophosaurini

Mounted replica of a composite skeleton of Edmontosaurus annectens on display at the University of Oxford Museum, Oxford, England. The original skeleton is compiled from disarticulated fossil bones from a bonebed of the Hell Creek Formation, exposed in the Ruth Mason Quarry in Harding County, South Dakota. It is 8.5 m (28 ft.) long and the skull is almost 1 m (39 in.) in length.[1][2] ↑ Dinosaurs in the Museum. Oxford University Museum of Natural History (brochure, PDF), p. 7 ↑ BHI Fossil Replica Catalog 2012. Black Hills Institute of Geological Research, Inc., Hill City, SD, 2012 (PDF), p. 22

os musée Hell Creek fossile +10
Fossil bone of Procerosaurus exogyrarum, possible dinosaur from the Czech Republic. National Museum, Prague (2007).
Taxons Ponerosteus

Fossil bone of Procerosaurus exogyrarum, possible dinosaur from the Czech Republic. National Museum, Prague (2007).

os musée Tchéquie fossile +3
Comparison of the holotype (BRSMG Cg3178, A and C right surangular, BAS specimen) and referred specimen (BRSMG Cg2488, B and D left surangular, Lilstock specimen) of Ichthyotitan severnensis gen. et sp. nov. To ease comparison, A and C have been reversed. A-B. Lateral view of both surangulars showing same unique shape; note the upturned, almost 90-degree angle bend and the spatulate-shaped posterior end. C-D. Medial view of both surangulars displaying same morphology posteriorly; anteriorly the Lilstock specimen (D) has been heavily eroded and distorted along its length. Note the position of an elongated foramen on the lateral surface (A-B), identified as part of the fossa surangularis that passes through the bone into the Meckelian canal. See also the damaged (?)angular that is articulated with the surangular and defined by a continuous groove (?suture) as seen in Fig 2H.
Taxons Ichthyotitan

Comparison of the holotype (BRSMG Cg3178, A and C right surangular, BAS specimen) and referred specimen (BRSMG Cg2488, B and D left surangular, Lilstock specimen) of Ichthyotitan severnensis gen. et sp. nov. To ease comparison, A and C have been reversed. A-B. Lateral view of both surangulars showing same unique shape; note the upturned, almost 90-degree angle bend and the spatulate-shaped posterior end. C-D. Medial view of both surangulars displaying same morphology posteriorly; anteriorly the Lilstock specimen (D) has been heavily eroded and distorted along its length. Note the position of an elongated foramen on the lateral surface (A-B), identified as part of the fossa surangularis that passes through the bone into the Meckelian canal. See also the damaged (?)angular that is articulated with the surangular and defined by a continuous groove (?suture) as seen in Fig 2H.

os holotype spécimen Ichthyotitan
Figure description from paper: "Fig. 3 Wimanius odontopalatus Maisch & Matzke, 1998, holotype, GPIT-PV-76272. Photos courtesy of G. Bindellini (Milano). a The complete holotype. b Detail showing a part of the dentition. c Disarticulated bones from the posterior part of the skull
Taxons Wimanius

Figure description from paper: "Fig. 3 Wimanius odontopalatus Maisch & Matzke, 1998, holotype, GPIT-PV-76272. Photos courtesy of G. Bindellini (Milano). a The complete holotype. b Detail showing a part of the dentition. c Disarticulated bones from the posterior part of the skull

os description holotype Wimaniidae +2
Figure description from paper: "Fig. 3 Wimanius odontopalatus Maisch & Matzke, 1998, holotype, GPIT-PV-76272. Photos courtesy of G. Bindellini (Milano). a The complete holotype. b Detail showing a part of the dentition. c Disarticulated bones from the posterior part of the skull
Taxons Wimaniidae

Figure description from paper: "Fig. 3 Wimanius odontopalatus Maisch & Matzke, 1998, holotype, GPIT-PV-76272. Photos courtesy of G. Bindellini (Milano). a The complete holotype. b Detail showing a part of the dentition. c Disarticulated bones from the posterior part of the skull

os description holotype Wimaniidae +2
Partial skull and anterior cervical vertebrae of unidentified pliosaurid plesiosaurian (MPPL 18797) from the uppermost Callovian–middle Oxfordian of Kaberlaba (Asiago, Italy), in left lateral view. Photograph (A) and explanatory drawing (B). White, preserved bone surfaces; dark grey, preserved margins of skull fenestrae; light grey, eroded bone surface; cross hatching, broken bone.
Taxons Anguanax

Partial skull and anterior cervical vertebrae of unidentified pliosaurid plesiosaurian (MPPL 18797) from the uppermost Callovian–middle Oxfordian of Kaberlaba (Asiago, Italy), in left lateral view. Photograph (A) and explanatory drawing (B). White, preserved bone surfaces; dark grey, preserved margins of skull fenestrae; light grey, eroded bone surface; cross hatching, broken bone.

os dessin Italie Callovien +6
Bone mapping of the skeleton of Plesiopharos moelensis gen. et sp. nov. (ML2302) from the Sinemurian (Lower Jurassic) of São Pedro de Moel (Leiria, Portugal). A. Bones distribution map of the three original extracted blocks (1, 2 and 3) containing ML2302. Arrows with question marks represent that the joining relationship between the blocks is unknown. B. Photographs of the five sub-blocks (1A, 1B, 2C, 2D, and 3E) after preparation works.
Taxons Plesiopharos

Bone mapping of the skeleton of Plesiopharos moelensis gen. et sp. nov. (ML2302) from the Sinemurian (Lower Jurassic) of São Pedro de Moel (Leiria, Portugal). A. Bones distribution map of the three original extracted blocks (1, 2 and 3) containing ML2302. Arrows with question marks represent that the joining relationship between the blocks is unknown. B. Photographs of the five sub-blocks (1A, 1B, 2C, 2D, and 3E) after preparation works.

os Portugal Jurassique Sinémurien +2
Outline and overview of the connected slabs TWE 480000454-A, -B, -D, -E, and -M.
TWE 480000454-A shows a single plate-like girdle bone (is). TWE 480000454-B contains
disarticulated vertebrae from the posterior presacral and sacral region (c1-11, na1-3),
fragments of dorsal ribs (dr1, dr2), elements of gastral ribs (unlabelled), the second ischium
(is), the round, plate-like pubis (pu), and three bones, most likely representing sacral- or
caudal ribs (?cr1-3). TWE 480000454-D, -E, and -M mainly contain dorsal ribs (dr3-9) and
elements of gastral ribs as well as two more isolated halves of neural arches (na4, na5), and a

caudal rib (cr1).
Taxons Pararcus

Outline and overview of the connected slabs TWE 480000454-A, -B, -D, -E, and -M. TWE 480000454-A shows a single plate-like girdle bone (is). TWE 480000454-B contains disarticulated vertebrae from the posterior presacral and sacral region (c1-11, na1-3), fragments of dorsal ribs (dr1, dr2), elements of gastral ribs (unlabelled), the second ischium (is), the round, plate-like pubis (pu), and three bones, most likely representing sacral- or caudal ribs (?cr1-3). TWE 480000454-D, -E, and -M mainly contain dorsal ribs (dr3-9) and elements of gastral ribs as well as two more isolated halves of neural arches (na4, na5), and a caudal rib (cr1).

os Pararcus
A color-coded skull diagram of Palatodonta bleekeri, mostly based on a diagram published by Neenan et al. (2013). Some interpretations (such as the presence of a quadratojugal) are based on Maisch (2020). Depicted in left lateral view, mirrored from the original specimen as preserved in right lateral view. Dotted lines indicate missing bone.
Taxons Palatodonta

A color-coded skull diagram of Palatodonta bleekeri, mostly based on a diagram published by Neenan et al. (2013). Some interpretations (such as the presence of a quadratojugal) are based on Maisch (2020). Depicted in left lateral view, mirrored from the original specimen as preserved in right lateral view. Dotted lines indicate missing bone.

os spécimen Palatodonta crâne
Cuspicephalus scarfi MJMG K1918. A, Original skull on slab of mudstone, Lacking the mandible and dentition; B, outline diagram of preserved bone. Light grey is bone, dark grey is fibrous bone of sagittal crest, black is dental alveoli where unambiguous; C restoration of skull outline, with hypothetical lower jaw. Scale bar = 50 mm. Abbreviation: j, jugal; naof, nasoantorbital fenestra; m, maxilla; o, orbit; pm, premaxilla; q, quadrate; sc,

sagittal crest; sq, squamosal; tr np, trace of nasal process.
Taxons Cuspicephalus

Cuspicephalus scarfi MJMG K1918. A, Original skull on slab of mudstone, Lacking the mandible and dentition; B, outline diagram of preserved bone. Light grey is bone, dark grey is fibrous bone of sagittal crest, black is dental alveoli where unambiguous; C restoration of skull outline, with hypothetical lower jaw. Scale bar = 50 mm. Abbreviation: j, jugal; naof, nasoantorbital fenestra; m, maxilla; o, orbit; pm, premaxilla; q, quadrate; sc, sagittal crest; sq, squamosal; tr np, trace of nasal process.

os crête écaille Cuspicephalus +1
Photographs of Melkamter pateko (MPEF-PV 11530), visible in medial views on the main block (1) with inset of the tooth (1B) and counterslab (2);. Rendered CT scan detail images (dashed areas represent visible bone that was too thin to be captured by CT scan) of the cranial fragment (1A), manual metacarpal (1C) and dorsal vertebrae (1D–F). Abbreviations: a = alveoli; if = infratemporal fenestra; j = jugal; l = lacrimal; m = maxilla; o = orbit; naof = Nnasoantorbital fenestra; np = nasal process; pm = premaxilla; po = postorbital; q = quadrate; qj = quadratojugal; s = squamosal; t = tooth; vas = vestigial ascending process.
Taxons Melkamter

Photographs of Melkamter pateko (MPEF-PV 11530), visible in medial views on the main block (1) with inset of the tooth (1B) and counterslab (2);. Rendered CT scan detail images (dashed areas represent visible bone that was too thin to be captured by CT scan) of the cranial fragment (1A), manual metacarpal (1C) and dorsal vertebrae (1D–F). Abbreviations: a = alveoli; if = infratemporal fenestra; j = jugal; l = lacrimal; m = maxilla; o = orbit; naof = Nnasoantorbital fenestra; np = nasal process; pm = premaxilla; po = postorbital; q = quadrate; qj = quadratojugal; s = squamosal; t = tooth; vas = vestigial ascending process.

os dent Melkamter tomographie
Skeletal reconstruction of the Spectrovenator ragei holotype (MZSP-PV 833). Recovered bones in blue.
Taxons Spectrovenator

Skeletal reconstruction of the Spectrovenator ragei holotype (MZSP-PV 833). Recovered bones in blue.

os holotype Spectrovenator
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Actualités

Mystery of Tyrannosaurus rex’s Tiny Arms May Finally Have an Answer
Le mystère des petits bras du Tyrannosaurus rex pourrait enfin avoir une réponse
os mâchoire prédateur proie Dinosauria Tyrannosaurus
Les paléontologues de l'University College de Londres et de l'Université de Cambridge affirment que les bras minuscules des grands dinosaures prédateurs ont évolué aux côtés de têtes massives et de mâchoires broyantes, ce qui suggère que les anciens prédateurs comptaient de plus en plus sur la morsure plutôt que sur la saisie de leurs proies. L’article Le mystère des petits bras du Tyrannosaurus rex pourrait enfin avoir une réponse apparaît en premier sur Sci.News : Breaking Science News.
20/05/2026 sci-news ⚙ Traduction automatique
Giant New Dinosaur Species Discovered in Thailand Reveals Hidden Diversity of Asian Titans
Une nouvelle espèce de dinosaure géant découverte en Thaïlande révèle la diversité cachée des titans asiatiques
os Thaïlande Crétacé Crétacé inférieur Dinosauria Somphospondyli Titanosauriformes découverte nouvelle espèce
Les paléontologues ont identifié un nouveau genre et une nouvelle espèce de dinosaure titanosauriforme somphospondylan - le plus grand jamais découvert en Asie du Sud-Est - à partir d'ossements fossilisés trouvés en Thaïlande, offrant ainsi une nouvelle preuve que la région abritait un groupe étonnamment diversifié d'énormes herbivores au début du Crétacé. L'article Une nouvelle espèce de dinosaure géant découverte en Thaïlande révèle la diversité cachée des titans asiatiques apparaît en premier sur Sci.News : Breaking Science News.
14/05/2026 sci-news ⚙ Traduction automatique
La paléontologie secouée par la découverte de molécules organiques dans des os de dinosaures vieux de 66 millions d'années
os collagène protéine fossile Dinosauria Edmontosaurus découverte
Les scientifiques ont découvert des preuves irréfutables selon lesquelles les fossiles de dinosaures peuvent encore contenir des traces de leurs protéines d'origine, renversant ainsi une croyance de longue date selon laquelle la fossilisation détruit toute matière organique. Dans un fossile d'Edmontosaurus remarquablement bien conservé du Dakota du Sud, les chercheurs ont détecté des restes de collagène – la principale protéine présente dans les os – à l'aide de techniques avancées, notamment la spectrométrie de masse et le séquençage des protéines.
14/05/2026 sciencedaily ⚙ Traduction automatique
Gongshuilong: Beast of the Week
Gongshuilong : Bête de la semaine
os Chine Crétacé Crétacé supérieur Gongshuilong Hadrosauria
 Aujourd'hui, nous examinons un hadrosaure récemment décrit avec un look unique, Gongshuilong fanwei ! Gongshuilong vivait dans ce qui est aujourd'hui l'est de la Chine, à la fin du Crétacé, il y a entre 68 et 66 millions d'années.  Du bec à la queue, il mesurait environ 7 m de long et aurait été un herbivore de son vivant.  Le nom du genre se traduit du mandarin par "Dragon de la rivière Gong" en référence à la rivière Gong près de l'endroit où ses os ont été découverts. Reconstruction de la vie de Gongshuilong à l'aquarelle b
10/05/2026 prehistoricbeastoftheweek ⚙ Traduction automatique
En Chine, les humains de la période glaciaire ont fabriqué des outils en pierre étonnamment avancés il y a 146 000 ans
os Chine découverte
Des scientifiques chinois ont découvert que les anciens humains fabriquaient des outils en pierre étonnamment avancés au cours d'une dure période glaciaire, il y a 146 000 ans. Les outils, créés par Homo juluensis, témoignent d'une planification minutieuse et d'une réflexion complexe plutôt que d'un simple taillage de pierres. Les chercheurs ont daté le site à l’aide de minuscules cristaux de calcite contenus dans des os d’animaux, révélant que les outils sont beaucoup plus anciens que prévu. Cette découverte remet en question l’idée selon laquelle la créativité humaine ne prospère que dans les périodes faciles et prospères.
09/05/2026 sciencedaily-paleo ⚙ Traduction automatique
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