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spécimen

Nature du spécimen

204 image(s) · 23 Actualités

Galerie d'images

MSNVE 3714, Ouranosaurus nigeriensis.

The mounted specimen as exhibited today at the MSNVE. For scale, the right femur is 920 mm long.
Taxons Ouranosaurus

MSNVE 3714, Ouranosaurus nigeriensis. The mounted specimen as exhibited today at the MSNVE. For scale, the right femur is 920 mm long.

écaille spécimen Ouranosaurus
Right dentary of Zalmoxes shqiperorum holotype NHMUK R4900in dorsal and lateral views, from the Sinpetru Formation of Sânpetru (Romania; outline based on the specimen UBB NVZ1-1).
Taxons Ferenceratops

Right dentary of Zalmoxes shqiperorum holotype NHMUK R4900in dorsal and lateral views, from the Sinpetru Formation of Sânpetru (Romania; outline based on the specimen UBB NVZ1-1).

Roumanie holotype spécimen Ferenceratops +3
Polycotylus latipinnis specimen (LACM 129639) containing a fetus on display at the Natural History Museum of Los Angeles County.
Taxons Polycotylus

Polycotylus latipinnis specimen (LACM 129639) containing a fetus on display at the Natural History Museum of Los Angeles County.

musée spécimen Polycotylus
The nodosaurid dinosaur, Glyptodontopelta is mostly known from isolated osteoderms ("armor plates"). The specimen SMP VP-1580 (State Museum of Pennysylvania) is however, the most complete known specimen, comprising parts of the skull, hundreds of osteoderms and fragments. This specimen was discovered in 2003 by Warwick Fowler, in the Naashoibito Member of the Ojo Alamo Formation (Maatrichtian, Late Cretaceous) of the San Juan Basin, New Mexico, during an expedition led by Dr. Robert Sullivan.
Taxons Glyptodontopelta

The nodosaurid dinosaur, Glyptodontopelta is mostly known from isolated osteoderms ("armor plates"). The specimen SMP VP-1580 (State Museum of Pennysylvania) is however, the most complete known specimen, comprising parts of the skull, hundreds of osteoderms and fragments. This specimen was discovered in 2003 by Warwick Fowler, in the Naashoibito Member of the Ojo Alamo Formation (Maatrichtian, Late Cretaceous) of the San Juan Basin, New Mexico, during an expedition led by Dr. Robert Sullivan.

armure musée Mexique Denver +9
Ornithocheirus simus. A–D holotype CAMSM B54428 (Albian, Cambridge Greensand), anterior part of the rostrum A left lateral view B respective line drawing C ventral view D respective line drawing E–H referred specimen CAMSM B54552 (Albian, Cambridge Greensand), anterior part of the rostrum E anterior view F respective line drawing G left lateral view H respective line drawing. Abbreviations: m – maxillae, pm – premaxillae. Arrows and numbers indicate alveoli or teeth and their respective position. Scale bar = 10 mm.
Taxons Ornithocheirus

Ornithocheirus simus. A–D holotype CAMSM B54428 (Albian, Cambridge Greensand), anterior part of the rostrum A left lateral view B respective line drawing C ventral view D respective line drawing E–H referred specimen CAMSM B54552 (Albian, Cambridge Greensand), anterior part of the rostrum E anterior view F respective line drawing G left lateral view H respective line drawing. Abbreviations: m – maxillae, pm – premaxillae. Arrows and numbers indicate alveoli or teeth and their respective position. Scale bar = 10 mm.

écaille dessin Albien holotype +2
Photograph of Museo civico di scienze naturali di Bergamo (MCSNB) 2888, the holotype specimen of Eudimorphodon ranzii ZAMBELLI 1973, a basal pterosaur from the Norian (middle Upper Triassic) of the Italian Alps.[1]


↑ see fig. 8A in Silvio Renesto (2006): A reappraisal of the diversity and biogeographic significance of the Norian (Late Triassic) reptiles from the Calcare di Zorzino. In: Jerry D. Harris, Spencer G. Lucas, Justin A. Spielmann, Martin G. Lockley, Andrew R.C. Milner, James I. Kirkland (eds.): The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:445–456 (online)
Taxons Eudimorphodon

Photograph of Museo civico di scienze naturali di Bergamo (MCSNB) 2888, the holotype specimen of Eudimorphodon ranzii ZAMBELLI 1973, a basal pterosaur from the Norian (middle Upper Triassic) of the Italian Alps.[1] ↑ see fig. 8A in Silvio Renesto (2006): A reappraisal of the diversity and biogeographic significance of the Norian (Late Triassic) reptiles from the Calcare di Zorzino. In: Jerry D. Harris, Spencer G. Lucas, Justin A. Spielmann, Martin G. Lockley, Andrew R.C. Milner, James I. Kirkland (eds.): The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:445–456 (online)

musée Mexique Jurassique Trias supérieur +6
The skull of a Chasmosaurus mariscalensis, on display at the Texas Memorial Museum. Chasmosaurus was a Cretaceous ceratopsian of North America. This specimen was discovered in Brewster County, Texas.
Taxons Agujaceratops

The skull of a Chasmosaurus mariscalensis, on display at the Texas Memorial Museum. Chasmosaurus was a Cretaceous ceratopsian of North America. This specimen was discovered in Brewster County, Texas.

musée Crétacé spécimen Agujaceratops +3
The official postcard (of the American Museum of Natural History) says this is a Barosaurus, and that "this unique freestanding mount is the only Barosaurus on view in the world". This was true until the installation of another Barosaurus specimen at the Royal Ontario Museum. The adult specimen pictured is AMNH 6341, classified as Barosaurus lentus. The juvenile specimen (AMNH 7530), originally classified as a juvenile Barosaurus, has since been reclassified as a specimen of Kaatedocus siberi.
Taxons Barosaurus

The official postcard (of the American Museum of Natural History) says this is a Barosaurus, and that "this unique freestanding mount is the only Barosaurus on view in the world". This was true until the installation of another Barosaurus specimen at the Royal Ontario Museum. The adult specimen pictured is AMNH 6341, classified as Barosaurus lentus. The juvenile specimen (AMNH 7530), originally classified as a juvenile Barosaurus, has since been reclassified as a specimen of Kaatedocus siberi.

musée juvénile spécimen Barosaurus +1
Cast of Gorgosaurus specimen ROM 1247 (sometimes labelled as Albertosaurus) at the Royal Tyrrell Museum.
Taxons Gorgosaurus

Cast of Gorgosaurus specimen ROM 1247 (sometimes labelled as Albertosaurus) at the Royal Tyrrell Museum.

musée Allemagne moulage spécimen +2
Otozoum tracks in the Dinosaur State Park and Arboretum, Rocky Hill, Connecticut, USA. The exhibit sign reads: "These large negative tracks were made by a heavy animal that walked on four toes and had a short stride. It may have been a prosauropod. All of these tracks have rare skin impressions. This specimen was removed from the Portland Quarry in 1896. Donated by Wesleyan University."
Taxons Otozoum

Otozoum tracks in the Dinosaur State Park and Arboretum, Rocky Hill, Connecticut, USA. The exhibit sign reads: "These large negative tracks were made by a heavy animal that walked on four toes and had a short stride. It may have been a prosauropod. All of these tracks have rare skin impressions. This specimen was removed from the Portland Quarry in 1896. Donated by Wesleyan University."

peau États-Unis Portland spécimen +3
Pachycephalosaurus wyomingensis "Sandy" specimen, Royal Ontario Museum
Taxons Pachycephalosaurus

Pachycephalosaurus wyomingensis "Sandy" specimen, Royal Ontario Museum

musée spécimen Pachycephalosauria
Morphological variation in the Deltapodus ibericus holotype trackway from the CT-1 tracksite. (a) False-color depth maps and interpretative outline drawings of a selection of manus–pes sets within the trackway. Note the variation in manus (from crescent, kidney to semicircular shapes) and pes (reversed delta, semirectangular, and oval shapes) tracks depending on the manus–pes set. Note also that some manus are overprinted by the pes. (b) Mediotype of the pes impressions based on 4 specimens with a mean footprint length of 0.48 m. Note that the morphology of the posterior part of the print is slightly biased (more quadrangular) because this area in track 1CA17p is broken. (c) Mediotype of the manus impressions based on 2 specimens with a mean footprint width of 0.37 m. (d–f) Pictures of a selection of the best-preserved tracks (manus–pes set 1CA23, pes 1CA17p and manus 1CA3m). The false color depth maps were generated with the software CloudCompare (https://www.cloudcompare.org/) and the mediotypes with the software DigTrace (https://www.digtrace.co.uk/).
Taxons Deltapodus

Morphological variation in the Deltapodus ibericus holotype trackway from the CT-1 tracksite. (a) False-color depth maps and interpretative outline drawings of a selection of manus–pes sets within the trackway. Note the variation in manus (from crescent, kidney to semicircular shapes) and pes (reversed delta, semirectangular, and oval shapes) tracks depending on the manus–pes set. Note also that some manus are overprinted by the pes. (b) Mediotype of the pes impressions based on 4 specimens with a mean footprint length of 0.48 m. Note that the morphology of the posterior part of the print is slightly biased (more quadrangular) because this area in track 1CA17p is broken. (c) Mediotype of the manus impressions based on 2 specimens with a mean footprint width of 0.37 m. (d–f) Pictures of a selection of the best-preserved tracks (manus–pes set 1CA23, pes 1CA17p and manus 1CA3m). The false color depth maps were generated with the software CloudCompare (https://www.cloudcompare.org/) and the mediotypes with the software DigTrace (https://www.digtrace.co.uk/).

dessin Royaume-Uni holotype spécimen +2
Brontosaurus excelsus in the Yale Peabody Museum of Natural History.
Brontosaurus excelsus
Inv no. YPM 1980 (holotype specimen of the species)
Discoverer William H. Reed 1879
Locality Como Bluff, Wyoming
Age Morrison Formatian, Jurassic period, 150 million years ago
Taxons Phytodinosauria

Brontosaurus excelsus in the Yale Peabody Museum of Natural History. Brontosaurus excelsus Inv no. YPM 1980 (holotype specimen of the species) Discoverer William H. Reed 1879 Locality Como Bluff, Wyoming Age Morrison Formatian, Jurassic period, 150 million years ago

musée Morrison Jurassique holotype +3
Type (a) and paratype (b) partial eggs of Stillatuberoolithus storrsi. Cropped from Figure 2 of Oser et al. (2021). These eggs are housed in Denver Museum of Nature and Science, specimen numbers EPV.65602 and EPV.128286 respectively.
Taxons Stillatuberoolithus

Type (a) and paratype (b) partial eggs of Stillatuberoolithus storrsi. Cropped from Figure 2 of Oser et al. (2021). These eggs are housed in Denver Museum of Nature and Science, specimen numbers EPV.65602 and EPV.128286 respectively.

musée Denver spécimen Stillatuberoolithus +1
Complete specimen of the Laueropterus vitriolus holotype (LF 6268). The holotype specimen seen under natural light. Major elements are labeled. Abbreviations as follows here and in subsequent figures: ca, caudal vertebra; cp, carpal; cv, cervical vertebrae; dv, dorsal vertebra; fe, femur; hu, humerus; mn, mandible; mt, metatarsal; ph, phalanges; pmm, premaxilla-maxilla; pp, prepubis; pt, pteroid; pv, pelvic plate; r, rib; sa, sacrum; sc, scapulocoracoid; sk, skull part; st, sternum; ta, tarsals; ti, tibia; ul, ulna; un, ungual; wpx, wing phalanges; wmc, wing metacarpal. Scale bar = 100 mm.
Taxons Laueropterus

Complete specimen of the Laueropterus vitriolus holotype (LF 6268). The holotype specimen seen under natural light. Major elements are labeled. Abbreviations as follows here and in subsequent figures: ca, caudal vertebra; cp, carpal; cv, cervical vertebrae; dv, dorsal vertebra; fe, femur; hu, humerus; mn, mandible; mt, metatarsal; ph, phalanges; pmm, premaxilla-maxilla; pp, prepubis; pt, pteroid; pv, pelvic plate; r, rib; sa, sacrum; sc, scapulocoracoid; sk, skull part; st, sternum; ta, tarsals; ti, tibia; ul, ulna; un, ungual; wpx, wing phalanges; wmc, wing metacarpal. Scale bar = 100 mm.

humérus écaille vertèbre holotype +3
‘Araripesaurus castilhoi’ A, B, holotype (DGM 549-R), the first pterosaur specimen from the Araripe basin, described by L. I. Price in 1971.
Taxons Araripesaurus

‘Araripesaurus castilhoi’ A, B, holotype (DGM 549-R), the first pterosaur specimen from the Araripe basin, described by L. I. Price in 1971.

holotype spécimen Araripesaurus Pterosauria
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Actualités

Cette petite griffe dans un fossile vieux de 500 millions d'années vient de réécrire l'origine des araignées
griffe Cambrien fossile spécimen
Ce qui a commencé comme un nettoyage de routine des fossiles s'est transformé en une surprise scientifique majeure lorsque des chercheurs ont découvert une petite griffe dans un spécimen vieux de 500 millions d'années, là où aucune griffe ne devrait exister. Ce détail a révélé Megachelicerax cousteaui, le plus ancien parent connu des araignées, repoussant les origines de ce groupe de 20 millions d'années. Le fossile montre que les principales caractéristiques des araignées et des limules modernes étaient déjà apparues lors de l'explosion cambrienne.
03/04/2026 sciencedaily ⚙ Traduction automatique
Haolong: Beast of the Week
Haolong : Bête de la semaine
Chine Crétacé Crétacé inférieur juvénile spécimen Dinosauria Haolong
 Cette semaine, nous allons découvrir un dinosaure nouvellement décrit qui est si unique qu'il change complètement ce que nous pensions savoir sur la peau des dinosaures !  Entrez Haolong Dongi ! Haolong était un dinosaure herbivore qui vivait dans ce qui est aujourd'hui le Liaoning, en Chine, au début du Crétacé, il y a environ 112,5 millions d'années.  Le seul spécimen enregistré mesure environ 8 pieds (2,45 m) du bec à la queue, mais il était juvénile lorsqu'il est mort, l'espèce a donc probablement grandi.  Le nom du genre se traduit du chinois par "S
08/03/2026 prehistoricbeastoftheweek ⚙ Traduction automatique
Il a fallu 40 ans au T. rex pour atteindre sa taille réelle, selon une étude
os croissance prédateur spécimen Tyrannosaurus étude
Le Tyrannosaurus rex a peut-être mis beaucoup plus de temps à grandir que les scientifiques ne le pensaient autrefois. En analysant les anneaux de croissance des os fossilisés des pattes de 17 spécimens de tyrannosaures et en utilisant de nouvelles méthodes statistiques, les chercheurs ont découvert que le célèbre prédateur avait probablement mis environ 40 ans pour atteindre sa taille maximale, soit environ huit tonnes, au lieu des 25 ans précédemment estimés.
05/03/2026 sciencedaily ⚙ Traduction automatique
Parasaurolophus: Beast of the Week
Parasaurolophus : Bête de la semaine
crête Crétacé Crétacé supérieur spécimen Canardia Dinosauria Parasaurolophus
Cette semaine, nous allons nous intéresser à un dinosaure à bec de canard très populaire.  Dites bonjour à Parasaurolophus !  Le parasaurolophus était un herbivore qui vivait dans ce qui est aujourd'hui l'Amérique du Nord à la fin du Crétacé, il y a environ 77 à 73 millions d'années.  Le parasaurolophus mesurait environ 9,1 mètres de long du bec à la queue, mais certains spécimens incomplets montrent qu'ils étaient un peu plus grands.  Parasaurolophus est surtout connu pour sa longue crête incurvée qui s'est développée à l'arrière de sa tête, givi
21/12/2025 prehistoricbeastoftheweek ⚙ Traduction automatique
Cet os rare résout enfin le mystère du Nanotyrannus
os croissance musée fossile spécimen Nanotyrannus Tyrannosaurus découverte
Les scientifiques ont confirmé que Nanotyrannus était une espèce mature et non un jeune T. rex. Un examen microscopique de son os hyoïde a fourni la preuve clé, correspondant aux signaux de croissance observés dans les spécimens connus de T. rex. Cette découverte suggère un écosystème de tyrannosaures plus riche et plus compétitif qu’on ne le pensait auparavant. Il montre également comment les fossiles de musée et les analyses de pointe peuvent réécrire l’histoire préhistorique.
09/12/2025 sciencedaily ⚙ Traduction automatique
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