spécimen

Nature du spécimen

228 image(s) · 18 Actualités

Galerie d'images

Figure 1: Geographic provenance and speculative reconstruction of the gigantic titanosaurian sauropod dinosaur Notocolossus gonzalezparejasi gen. et sp. nov.
(a) Type locality of Notocolossus (indicated by star) in southern-most Mendoza Province, Argentina. (b) Reconstructed skeleton and body silhouette in right lateral view, with preserved elements of the holotype (UNCUYO-LD 301) in light green and those of the referred specimen (UNCUYO-LD 302) in orange. Scale bar, 1 m. (All images were hand drawn by the senior author [B.J.G.R.] and subsequently edited using Adobe Illustrator software.)

Figure 1: Geographic provenance and speculative reconstruction of the gigantic titanosaurian sauropod dinosaur Notocolossus gonzalezparejasi gen. et sp. nov. (a) Type locality of Notocolossus (indicated by star) in southern-most Mendoza Province, Argentina. (b) Reconstructed skeleton and body silhouette in right lateral view, with preserved elements of the holotype (UNCUYO-LD 301) in light green and those of the referred specimen (UNCUYO-LD 302) in orange. Scale bar, 1 m. (All images were hand drawn by the senior author [B.J.G.R.] and subsequently edited using Adobe Illustrator software.)

écaille Argentine holotype spécimen +4
A 6.4 meter (21ft) Eurhinosaurus species specimen from the Holzmaden Formation, Baden-Wurttenburg, Germany.  ~185 million years old.

A 6.4 meter (21ft) Eurhinosaurus species specimen from the Holzmaden Formation, Baden-Wurttenburg, Germany. ~185 million years old.

Allemagne spécimen Eurhinosauria formation
Holotype specimen of Pterodactylus suevicus (now classified as Cycnorhamphus), specimen number GPIT 80 (example 53 of Wellnhofer 1970)
Taxons Gallodactylus

Holotype specimen of Pterodactylus suevicus (now classified as Cycnorhamphus), specimen number GPIT 80 (example 53 of Wellnhofer 1970)

holotype spécimen Cycnorhamphus Gallodactylidae +3
Fossil specimen of early Cretaceous pterosaur Sinopterus dongi, which is collected from Chaoyang, Liaoning, China. The specimen (BMNHC Ph773) is a collection of Beijing Museum of Natural History and was on display in the National Museum of Natural Science (Taichung, Taiwan) during a special exhibition.
Taxons Huaxiapterus

Fossil specimen of early Cretaceous pterosaur Sinopterus dongi, which is collected from Chaoyang, Liaoning, China. The specimen (BMNHC Ph773) is a collection of Beijing Museum of Natural History and was on display in the National Museum of Natural Science (Taichung, Taiwan) during a special exhibition.

musée Chine Taïwan Crétacé +6
Fossil specimen of Anchiornis huxleyi on display at the Beijing Museum of Natural History.

Fossil specimen of Anchiornis huxleyi on display at the Beijing Museum of Natural History.

musée fossile spécimen Anchiornis
Mounted specimen of Archaeornithomimus asiaticus on display at the Paleozoological Museum of China.
Taxons Archaeornithomimus

Mounted specimen of Archaeornithomimus asiaticus on display at the Paleozoological Museum of China.

musée Chine spécimen Archaeornithomimus
Specimens of Galleonosaurus dorisae n. gen. n. sp. from the Flat Rocks Sandstone in the upper Barremian, Wonthaggi Formation, Gippsland Basin, southeastern Australia: (1–2) holotype (NMV P229196), left maxilla in lateral (1) and medial (2) views; (3) NMV P208178, left maxilla in lateral view; (4) NMV P212845, left maxilla in lateral view; (5) NMV P209977, left maxilla in lateral view; (6) NMV P186440, left maxilla in lateral view; (7) NMV 208113, right maxillary tooth in labial view. Scale bars = 10 mm (1–6); 1 mm (7).
Taxons Galleonosaurus

Specimens of Galleonosaurus dorisae n. gen. n. sp. from the Flat Rocks Sandstone in the upper Barremian, Wonthaggi Formation, Gippsland Basin, southeastern Australia: (1–2) holotype (NMV P229196), left maxilla in lateral (1) and medial (2) views; (3) NMV P208178, left maxilla in lateral view; (4) NMV P212845, left maxilla in lateral view; (5) NMV P209977, left maxilla in lateral view; (6) NMV P186440, left maxilla in lateral view; (7) NMV 208113, right maxillary tooth in labial view. Scale bars = 10 mm (1–6); 1 mm (7).

écaille dent Australie Barrémien +4
Figure 4: Savannasaurus elliottorum gen. et sp. nov., holotype specimen AODF 660. (a–e) Dorsal vertebrae (left lateral view). (f) Sacrum (ventral view). (g,h) Caudal vertebrae (left lateral view). (i) Left coracoid (lateral view). (j) Right sternal plate (ventral view). (k) Left radius (posterior view). (l) Right metacarpal III (anterior view). (m) Left astragalus (anterior view). (n) Coossified right and left pubes (anterior view). A number of ribs were preserved but have been omitted for clarity. Scale bar = 500 mm. [N.b.: the right sternal plate is misidentified [1] and is actually a left sternal plate.]
Taxons Savannasaurus

Figure 4: Savannasaurus elliottorum gen. et sp. nov., holotype specimen AODF 660. (a–e) Dorsal vertebrae (left lateral view). (f) Sacrum (ventral view). (g,h) Caudal vertebrae (left lateral view). (i) Left coracoid (lateral view). (j) Right sternal plate (ventral view). (k) Left radius (posterior view). (l) Right metacarpal III (anterior view). (m) Left astragalus (anterior view). (n) Coossified right and left pubes (anterior view). A number of ribs were preserved but have been omitted for clarity. Scale bar = 500 mm. [N.b.: the right sternal plate is misidentified [1] and is actually a left sternal plate.]

écaille holotype spécimen Savannasaurus
Various fossils pertaining to the holotype of the Triassic ichthyosaur Toretocnemus californicus. This image is derived from plate 24 in Merriam (1903), done by an uncredited artist. The arrangement of the individual figures has been modified from the original.
Original description:
Toretocnemus californicus n. gen. and sp.
Figures reproduced natural size from the type specimen.

Fig. 1. — Inferior side of right posterior limb. t, tibia.
Fig. 2. — Right anterior limb. r, radius.
Fig. 3.— Pelvic arch.
Fig. 4. — Middle dorsal vertebrae and a rib from the same region.
Taxons Toretocnemus

Various fossils pertaining to the holotype of the Triassic ichthyosaur Toretocnemus californicus. This image is derived from plate 24 in Merriam (1903), done by an uncredited artist. The arrangement of the individual figures has been modified from the original. Original description: Toretocnemus californicus n. gen. and sp. Figures reproduced natural size from the type specimen. Fig. 1. — Inferior side of right posterior limb. t, tibia. Fig. 2. — Right anterior limb. r, radius. Fig. 3.— Pelvic arch. Fig. 4. — Middle dorsal vertebrae and a rib from the same region.

membre description Trias fossile +5
"Eric", a near-complete opalized specimen of the plesiosaur Umoonasaurus at the Australian Museum
Taxons Umoonasaurus

"Eric", a near-complete opalized specimen of the plesiosaur Umoonasaurus at the Australian Museum

musée spécimen Plesiosauria Umoonasaurus
Azhdarcho sp., ZIN PH 56/43, distal fragment of a right ulna in proximal (a), ventral (b), posterior (c), dorsal (d), anterior (e), and distal (f, stereopair) views. This specimen is from the Tyulkili locality in the northeastern Aral Sea region of Kazakhstan; Zhirkindek Formation, Upper Cretaceous (upper Turonian – Coniacian). Abbreviations: das, dorsal articulation surface; ft, groove for flexor tendon; tub, tuberculum; vf, ventral fovea. Scale bar is 10 mm.
Taxons Azhdarcho

Azhdarcho sp., ZIN PH 56/43, distal fragment of a right ulna in proximal (a), ventral (b), posterior (c), dorsal (d), anterior (e), and distal (f, stereopair) views. This specimen is from the Tyulkili locality in the northeastern Aral Sea region of Kazakhstan; Zhirkindek Formation, Upper Cretaceous (upper Turonian – Coniacian). Abbreviations: das, dorsal articulation surface; ft, groove for flexor tendon; tub, tuberculum; vf, ventral fovea. Scale bar is 10 mm.

écaille Kazakhstan Coniacien Crétacé +4
Neotype fossil of Ardeadactylus longicollum, specimen number SMNS 56603 (Number 58 in Wellnhofer 1970).

Neotype fossil of Ardeadactylus longicollum, specimen number SMNS 56603 (Number 58 in Wellnhofer 1970).

fossile spécimen Ardeadactylus Wellnhoferia
Fossil specimen RTMP 82.19.23 - A lacrimal, postorbitals, squamosals, frontals, parietals, and braincase referred to Latenivenatrix mcmasterae, but formerly assigned to Stenonychosaurus inequalis (=Troodon inequalis). Described by 

Currie, 1985. "Cranial anatomy of Stenonychosaurus inequalis (Saurischia, Theropoda) and its bearing on the origin of birds." Canadian Journal of Earth Sciences, 22(1), 643-658.
5d-dinosaur-camp-day2-20120802-15.jpg
Taxons Latenivenatrix

Fossil specimen RTMP 82.19.23 - A lacrimal, postorbitals, squamosals, frontals, parietals, and braincase referred to Latenivenatrix mcmasterae, but formerly assigned to Stenonychosaurus inequalis (=Troodon inequalis). Described by Currie, 1985. "Cranial anatomy of Stenonychosaurus inequalis (Saurischia, Theropoda) and its bearing on the origin of birds." Canadian Journal of Earth Sciences, 22(1), 643-658. 5d-dinosaur-camp-day2-20120802-15.jpg

Canada fossile spécimen Dinosauria +7
Rhomboid distal nasal process of the crest of Tsintaosaurus spinorhinus.

A. Partial distal nasal process of IVPP V725 in right lateral view. B. Lateral view of composite skull (reversed). C. partial premaxillonasal complex of IVPP V829 in right lateral view. D. Line drawing of (C) showing nasal-premaxilla articulation, and the displacement (arrow) experienced by the distal nasal process relative to its articular position. E. Mounted holotype skull (IVPP V725) of T. spinorhinus in left lateral view (reversed). F. Partial right distal nasal process (although catalogued as IVPP V725, this element corresponds to a different specimen than the type; reversed).
Taxons Tsintaosaurus

Rhomboid distal nasal process of the crest of Tsintaosaurus spinorhinus. A. Partial distal nasal process of IVPP V725 in right lateral view. B. Lateral view of composite skull (reversed). C. partial premaxillonasal complex of IVPP V829 in right lateral view. D. Line drawing of (C) showing nasal-premaxilla articulation, and the displacement (arrow) experienced by the distal nasal process relative to its articular position. E. Mounted holotype skull (IVPP V725) of T. spinorhinus in left lateral view (reversed). F. Partial right distal nasal process (although catalogued as IVPP V725, this element corresponds to a different specimen than the type; reversed).

crête dessin holotype spécimen +3
Life restoration of Stegosaurus stenops based on the "Sophie" specimen, NHMUK PV R36730. Digital.
Taxons Stegopodus

Life restoration of Stegosaurus stenops based on the "Sophie" specimen, NHMUK PV R36730. Digital.

spécimen Stegopodus Stegosauria
Life restoration of Stegosaurus stenops based on the "Sophie" specimen, NHMUK PV R36730. Digital.
Taxons Tatankacephalus

Life restoration of Stegosaurus stenops based on the "Sophie" specimen, NHMUK PV R36730. Digital.

spécimen Stegopodus Stegosauria
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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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