spécimen

Nature du spécimen

228 image(s) · 18 Actualités

Galerie d'images

A more complete specimen of Wapuskanectes betsynichollsae. TMP2012.50.1.

(A) Dorsal view of the originally upside down remains recovered from north of the town of Fort McMurray, Alberta. The head and most of the neck were lost when intercepted by a grader during road construction. The right flipper was lost sometime in the Early Cretaceous prior to the final burial of the body. (B) The pelvic and abdominal regions of TMP2012.50.1 showing gastroliths (black arrows) within the body cavity that settled between the ribs of the inverted carcass and hint at a more substantial collection that is hidden inside the body cavity. Scale bars on body regions are 10 cm. Source credit: Sue Sabrowski, Royal Tyrrell Museum of Palaeontology.
Taxons Wapuskanectes

A more complete specimen of Wapuskanectes betsynichollsae. TMP2012.50.1. (A) Dorsal view of the originally upside down remains recovered from north of the town of Fort McMurray, Alberta. The head and most of the neck were lost when intercepted by a grader during road construction. The right flipper was lost sometime in the Early Cretaceous prior to the final burial of the body. (B) The pelvic and abdominal regions of TMP2012.50.1 showing gastroliths (black arrows) within the body cavity that settled between the ribs of the inverted carcass and hint at a more substantial collection that is hidden inside the body cavity. Scale bars on body regions are 10 cm. Source credit: Sue Sabrowski, Royal Tyrrell Museum of Palaeontology.

écaille musée Crétacé Crétacé inférieur +2
Reconstruction of the skull of Lagenanectes richterae in right lateral view. Only the anterior part of the skull and lower jaw is preserved in the type and only known specimen. The posterior parts are reconstructed based on the related genus Libonectes.
Taxons Lagenanectes

Reconstruction of the skull of Lagenanectes richterae in right lateral view. Only the anterior part of the skull and lower jaw is preserved in the type and only known specimen. The posterior parts are reconstructed based on the related genus Libonectes.

spécimen Lagenanectes Libonectes crâne
MUHNCAL.20173, holotype specimen of Gondwananectes osvaldoi. A, quarry scheme of the recovered blocks (numbered 1–7). Blocks 1–3 preserve contact surfaces and they are arranged consistently. The position of blocks 4–7 is tentative due to the lack of contact surfaces, although it is based on the anatomical elements preserved. B, schematic diagram of the preserved anatomical elements in MUHNCAL.20173. Abbreviations: c1–c10, cervical centra/vertebrae; d1–d3, dorsal centra; d1na–d3na, neural arches of the d1–d3 dorsal centra; il, ilium fragment; in, indeterminate; lco, left coracoid, lcna, last cervical neural arch; lh, left humerus; lsc, left scapula (ventral process); p1–p2, pectoral centra; pd, posterior dorsal centrum; pna, pectoral neural arch; r, ribs; rh, right humerus (distal); rsc, right scapula (dorsal process). Scale bars represent 10 cm.
Taxons Gondwananectes

MUHNCAL.20173, holotype specimen of Gondwananectes osvaldoi. A, quarry scheme of the recovered blocks (numbered 1–7). Blocks 1–3 preserve contact surfaces and they are arranged consistently. The position of blocks 4–7 is tentative due to the lack of contact surfaces, although it is based on the anatomical elements preserved. B, schematic diagram of the preserved anatomical elements in MUHNCAL.20173. Abbreviations: c1–c10, cervical centra/vertebrae; d1–d3, dorsal centra; d1na–d3na, neural arches of the d1–d3 dorsal centra; il, ilium fragment; in, indeterminate; lco, left coracoid, lcna, last cervical neural arch; lh, left humerus; lsc, left scapula (ventral process); p1–p2, pectoral centra; pd, posterior dorsal centrum; pna, pectoral neural arch; r, ribs; rh, right humerus (distal); rsc, right scapula (dorsal process). Scale bars represent 10 cm.

humérus écaille holotype spécimen +1
Meyerasaurus victor (jr synonym Rhomaleosaurus victor) holotype. Specimen # SMNS 12478, Museum am Löwentor, Stuttgart, Germany
Taxons Meyerasaurus

Meyerasaurus victor (jr synonym Rhomaleosaurus victor) holotype. Specimen # SMNS 12478, Museum am Löwentor, Stuttgart, Germany

musée Allemagne holotype spécimen +2
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
Holotype specimen of Bellubrunnus BSP XVIII–VFKO–A12.

Scale bare 1 cm.
Taxons Bellubrunnus

Holotype specimen of Bellubrunnus BSP XVIII–VFKO–A12. Scale bare 1 cm.

écaille holotype spécimen Bellubrunnus
The holotype specimen of the extinct pterosaur Ceoptera, NHMUK PV R 37110
Taxons Ceoptera

The holotype specimen of the extinct pterosaur Ceoptera, NHMUK PV R 37110

musée holotype spécimen Ceoptera +1
Holotype specimen of the anurognathid pterosaur Sinomacrops
Taxons Sinomacrops

Holotype specimen of the anurognathid pterosaur Sinomacrops

holotype spécimen Anurognathidae Pterosauria +1
Photo of a specimen belonging to the anurognathid pterosaur Anurognathus
Taxons Anurognathus

Photo of a specimen belonging to the anurognathid pterosaur Anurognathus

spécimen Anurognathidae Anurognathus Pterosauria
Mimodactylus libanensis gen. et sp. nov. (a) Photo and drawing of the complete specimen. (b) Close up of scapula and coracoid. (c) Detail of the wrist, showing the relation of the pteroid and the carpus. (d) Detail of the humerus. Scale-bars, a: 50 mm; b-d: 10 mm. Abbreviations. car: carpus; cdv: caudal vertebrae; cor: coracoid; cra: cranium; cs: cristospine; cv: cervical vertebrae; d: dentary; dcar: distal carpals; dpc: deltopectoral crest; dri: dorsal ribs; dv: dorsal vertebrae; fe: femur; hu: humerus; man: mandible; mcI-III: first to third metacarpals; mcIV: wing metacarpal; mtar: metatarsals; pcar: proximal carpals; ph1d4: first wing phalanx; ph2d4: second wing phalanx; ph3d4: third wing phalanx; ph4d4: fourth wing phalanx; ppu: prepubis; ptd: pteroid; ra: radius; sca: scapula; sri: sacral ribs; stp: sternal plate; sym: mandibular symphysis; tar: tarsus; te: teeth; ti: tibia; ul: ulna; the abbreviations ‘l’ and ‘r’ represents respectively left and right.
Taxons Mimodactylus

Mimodactylus libanensis gen. et sp. nov. (a) Photo and drawing of the complete specimen. (b) Close up of scapula and coracoid. (c) Detail of the wrist, showing the relation of the pteroid and the carpus. (d) Detail of the humerus. Scale-bars, a: 50 mm; b-d: 10 mm. Abbreviations. car: carpus; cdv: caudal vertebrae; cor: coracoid; cra: cranium; cs: cristospine; cv: cervical vertebrae; d: dentary; dcar: distal carpals; dpc: deltopectoral crest; dri: dorsal ribs; dv: dorsal vertebrae; fe: femur; hu: humerus; man: mandible; mcI-III: first to third metacarpals; mcIV: wing metacarpal; mtar: metatarsals; pcar: proximal carpals; ph1d4: first wing phalanx; ph2d4: second wing phalanx; ph3d4: third wing phalanx; ph4d4: fourth wing phalanx; ppu: prepubis; ptd: pteroid; ra: radius; sca: scapula; sri: sacral ribs; stp: sternal plate; sym: mandibular symphysis; tar: tarsus; te: teeth; ti: tibia; ul: ulna; the abbreviations ‘l’ and ‘r’ represents respectively left and right.

crête humérus écaille dessin +3
Ferrodraco lentoni gen. et sp. nov. holotype specimen AODF 876. All preserved elements were photographed and scaled to the same size, then articulated where possible. These were then used as the basis for the scaling of the skeletal reconstruction, the missing parts of which were based on the skeletal reconstruction of Tropeognathus mesembrinus by Mark Witton. Scale bar = 50 mm.
Taxons Ferrodraco

Ferrodraco lentoni gen. et sp. nov. holotype specimen AODF 876. All preserved elements were photographed and scaled to the same size, then articulated where possible. These were then used as the basis for the scaling of the skeletal reconstruction, the missing parts of which were based on the skeletal reconstruction of Tropeognathus mesembrinus by Mark Witton. Scale bar = 50 mm.

écaille holotype spécimen Ferrodraco +1
Haliskia peterseni gen. et sp. nov., holotype specimen KK F1426. (A) dorsal vertebra, ribs, gastralium, left scapulocoracoid, left and right manual phalanx IV-2, right manual phalanx IV-3, left femur, left tibia, metatarsals and pedal phalanges, (B) mandible, teeth, ceratobranchials, cervical vertebra, rib, gastralium, right syncarpus, right lateral carpal, right pteroid, metacarpals, manual digits, right manual phalanx IV-1, left manual phalanx IV-4, (C) premaxilla with teeth, (D) isolated tooth, (E) isolated tooth, (F) left lateral carpal, (G) left metacarpal IV. Scale bar = 50 mm.
Taxons Haliskia

Haliskia peterseni gen. et sp. nov., holotype specimen KK F1426. (A) dorsal vertebra, ribs, gastralium, left scapulocoracoid, left and right manual phalanx IV-2, right manual phalanx IV-3, left femur, left tibia, metatarsals and pedal phalanges, (B) mandible, teeth, ceratobranchials, cervical vertebra, rib, gastralium, right syncarpus, right lateral carpal, right pteroid, metacarpals, manual digits, right manual phalanx IV-1, left manual phalanx IV-4, (C) premaxilla with teeth, (D) isolated tooth, (E) isolated tooth, (F) left lateral carpal, (G) left metacarpal IV. Scale bar = 50 mm.

écaille dent vertèbre holotype +2
Preserved elements of Eurazhdarcho langendorfensis re-assembled as found in partial articulation.

EME VP 312. (a) Slab and counter-slab with cervical vertebrae in dorsal view. (b) Specimen in original position with cervicals in ventral view.
Taxons Eurazhdarcho

Preserved elements of Eurazhdarcho langendorfensis re-assembled as found in partial articulation. EME VP 312. (a) Slab and counter-slab with cervical vertebrae in dorsal view. (b) Specimen in original position with cervicals in ventral view.

spécimen Eurazhdarcho partiel
Aralazhdarcho bostobensis, ZIN PH 57/43, a proximal fragment of a left humerus in proximal (a), ventral (b), anterior (c), dorsal (d), and posterior (e) views. This specimen is from the Shakh Shakh II locality in the northeasten Aral Sea region of Kazakhstan; Bostobe Formation, Upper Cretaceous (Santonian – lower Campanian). Abbreviations: h, humeral head; pf, pneumatic foramen; uc, ulnar crest. Scale bar is 10 mm.
Taxons Aralazhdarcho

Aralazhdarcho bostobensis, ZIN PH 57/43, a proximal fragment of a left humerus in proximal (a), ventral (b), anterior (c), dorsal (d), and posterior (e) views. This specimen is from the Shakh Shakh II locality in the northeasten Aral Sea region of Kazakhstan; Bostobe Formation, Upper Cretaceous (Santonian – lower Campanian). Abbreviations: h, humeral head; pf, pneumatic foramen; uc, ulnar crest. Scale bar is 10 mm.

crête humérus écaille Kazakhstan +7
Mandibular symphyses of Xericeps curvirostris. A–E Holotype FSAC-KK 10700; F–H referred specimen FSAC-KK 5203. A, F In left lateral view; B, G in occlusal view; C, H in ventral view; D, in posterior view and E, in anterior view. Scale bars represent 10 mm. A-C Ammonium chloride coated specimen
Taxons Xericeps

Mandibular symphyses of Xericeps curvirostris. A–E Holotype FSAC-KK 10700; F–H referred specimen FSAC-KK 5203. A, F In left lateral view; B, G in occlusal view; C, H in ventral view; D, in posterior view and E, in anterior view. Scale bars represent 10 mm. A-C Ammonium chloride coated specimen

écaille holotype spécimen Xericeps
Aurorazhdarcho micronyx (specimen formerly classified as Pterodactylus longirostris) in Exposition temporaire: Perles
Taxons Aurorazhdarcho

Aurorazhdarcho micronyx (specimen formerly classified as Pterodactylus longirostris) in Exposition temporaire: Perles

spécimen Aurorazhdarcho Pterodactylus
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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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