crête

Partie anatomique

31 image(s) · 2 Actualités

Galerie d'images

Holotype of Alcione elainus. Fig. 6 of: Longrich, N. R., Martill, D. M., & Andres, B. (2018). Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. PLoS biology, 16(3), e2001663. --- Original figure legend: A. elainus FSAC-OB 2, holotype partial skeleton and FSAC-OB 217, metacarpal IV. (A) Holotype right humerus in anterior view, (B) holotype right ulna and radius in anterior view, respectively, (C) holotype sternum in left lateral view, (D) referred metacarpal IV, (E) holotype, distal end of left metacarpal IV and left scapulocoracoid, and (F) holotype right femur in posterior view. Abbreviations: co, coracoid; cr, cristospine; dc, distal condyle; dpc, deltopectoral crest; ect, ectepicondyle; fh, femoral head; gl, glenoid; gt, greater trochanter; hh, humeral head; hum, humerus; mcIV, metacarpal IV, pc, proximal cotyle; pf, pneumatic foramen; rad, radius; scpr, supracondylar process; ste, sternum; uln, ulna.

crête humérus Crétacé Maastrichtien +7
Taxons Alcione

Holotype of Alcione elainus. Fig. 6 of: Longrich, N. R., Martill, D. M., & Andres, B. (2018). Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. PLoS biology, 16(3), e2001663. --- Original figure legend: A. elainus FSAC-OB 2, holotype partial skeleton and FSAC-OB 217, metacarpal IV. (A) Holotype right humerus in anterior view, (B) holotype right ulna and radius in anterior view, respectively, (C) holotype sternum in left lateral view, (D) referred metacarpal IV, (E) holotype, distal end of left metacarpal IV and left scapulocoracoid, and (F) holotype right femur in posterior view. Abbreviations: co, coracoid; cr, cristospine; dc, distal condyle; dpc, deltopectoral crest; ect, ectepicondyle; fh, femoral head; gl, glenoid; gt, greater trochanter; hh, humeral head; hum, humerus; mcIV, metacarpal IV, pc, proximal cotyle; pf, pneumatic foramen; rad, radius; scpr, supracondylar process; ste, sternum; uln, ulna.

crête humérus Crétacé Maastrichtien +7
Taxons Monofenestrata

Figure 4 The reconstruction of the skull and lower jaw of the holotype of Darwinopterus camposi sp. nov. (IVPP V 17957). Scale bar: 50 mm. Abbreviations: d, dentary; f, frontal; j, jugal; ltf, lower temporal fenestra; m, maxilla; man.sys, mandibular symphysis; naof, nasoantorbital fenestra; o, orbit; p, parietal; pm, premaxilla; pmcr, premaxillary crest; po, postorbital; prn, nasal process; q, quadrate; sq, squamosal; utf, upper temporal fenestra.

crête écaille reconstitution holotype +4
Taxons Darwinoptera

Figure 4 The reconstruction of the skull and lower jaw of the holotype of Darwinopterus camposi sp. nov. (IVPP V 17957). Scale bar: 50 mm. Abbreviations: d, dentary; f, frontal; j, jugal; ltf, lower temporal fenestra; m, maxilla; man.sys, mandibular symphysis; naof, nasoantorbital fenestra; o, orbit; p, parietal; pm, premaxilla; pmcr, premaxillary crest; po, postorbital; prn, nasal process; q, quadrate; sq, squamosal; utf, upper temporal fenestra.

crête écaille reconstitution holotype +4
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 restauration +2
Taxons Gladocephaloideus

Photograph (A) and line drawings (B) of Gladocephaloideus jingangshanensis (JPM 2014–004). Abbreviations: ca, carpals; cr, coracoids; cv, cervical vertebrae; d, dentray; dg, deep groove along the mid-line of the mandibular symphysis; dv, dorsal vertebrae; dr, dorsal ribs; etp, extensor tendon process; f, frontal; fc, fifth carpal; fe, femur; fi, fibula; fin, fingers; h, humerus; il, ilium; m, maxilla; mmttsI-IV, metatrals I-IV; mttv, metatarsal V; nao, nasoantorbital opening; or, orbital; pcr, parietal crest; pm, premaxilla; pt, pteroid; ra, radius; rdl, radiale; sc, scapula; st, sternum; sl, sclerotic rings; t, teeth; tc, tooth sockets; ti, tibia; ul, ulna; wm, wing metacarpal; wph1-4, wing phalanges 1–4. Scale bar = 5 cm.

crête humérus écaille dent +1
Taxons Simurghia

FSAC-OB 7, holotype right humerus, Simurghia robustus. In (A), dorsal view, (B) ventral view, and (C) posterior view. Abbreviations: dpc, deltopectoral crest; msc, muscle scar; scpr, supracondylar process of the ectepicondyle; vp, ventral pillar; vt, ventral tubercle of the deltopectoral crest.

crête humérus holotype Simurghia
Taxons Barbaridactylus

FSAC-OB 232, holotype skeleton of Barbaridactylus grandis. (A) Left humerus in anterior view, (B) right femur in anterior view, (C) right radius and ulna in posterior view, (D) cervical vertebra in ventral view, (E) left scapulocoracoid in medial view, and (F) posterior ramus of the right mandible in medial view. Abbreviations: co, coracoid; cot, cotyle of mandible; cvr, cervical ribs; dm, dorsal margin of mandible; dpc, deltopectoral crest; gl, glenoid; fh, femoral head; gt, greater trochanter; hh, humeral head; hyp, hypapophysis; olp, olecranon process; pex, postexapophysis; pn, pneumatopore; rad, radius; sca, scapula; scp, supracondylar process of the ectepicondyle; uc, ulnar crest; uln, ulna; vm, ventral margin of mandible.

crête humérus vertèbre holotype +2
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
Taxons Mimodactylidae

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
Taxons Dawndraco

Photograph of UALVP 24238. Cranial crest and wing phalanges 2-4 of the left wing have been reconstructed with plaster and paint (on the right side of the photograph), as well as metatarsals of the left foot.

crête Dawndraco
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
Taxons Caiuajara

Skull of Caiuajara dobruskii gen. et sp. nov. (holotype, CP.V 1449) with the shape of an adult individual. Scale bar equals 50: d, dentary; dcr, dentary crest; dep, depression; exp, ventral expansion of the premaxilla; f, frontal; fcr, frontal crest; fo, foraminae; m, maxilla; oc, occipital condyle; op, opisthotic; p, parietal; pm, premaxilla; pmcr, premaxillary crest; q, quadrate; soc, supraoccipital. The quadrate is inverted.

crête écaille holotype Caiuajara +1
Taxons Iberodactylus

Partial rostrum of Iberodactylus andreui gen. et sp. nov. (MPZ-2014/1). Photographic images (A–F) and 3D renderings obtained from μCT data (G–L) in right lateral (A,G), left lateral (B,H), dorsal (C,I), palatal (D,J), caudal (E,K), and cranial (F,L) views. Scale bar in cm. Abbreviations. pm: premaxilla; pmcr: premaxillary crest; prid: palatal ridge; te: teeth; trb: trabeculae.

crête écaille Iberodactylus partiel
Taxons Vespersaurus

Holotype right pes of Vespersaurus paranaensis gen. et sp. nov. (MPCO.V 0065d1). (a) Distal end of metatarsal II-IV in dorsal view. (b) Distal part of digit II in lateral view. (c) Distal part of digit IV in lateral view. (d) Entire foot as preserved in lateral view. Anatomical abbreviations: ed, extensor depression; fd, flexor depression; lcp, lateral collateral pit; mc, lateral crest; plg, proximolateral groove; vg, vertical groove; vlg, ventral lateral groove; vm, ventral margin.

crête holotype Vespersaurus
Taxons Quilmesaurus

Fig. 2. Right tibia of Quilmesaurus curriei compared to other tibiae of Abelisauridae. A-B: Quilmesaurus curriei in lateral and anterior view; C: Aucasaurus garridoi, D: Genusaurus sisterornis, E and H: Ekrixinatosaurus novasi, F: Indosuchus raptorius (Courtesy of Dr. F. E. Novas), G: Rajasaurus narmadensis; I: Pycnonemosaurus nevesi Abbreviations: faap: facet for the ascending process of the astragalus; cc: cnemial crest; lm: lateral malleolus; lma: lateral margin of the malleolus; lpcc: lateral process of the cnemial crest; mm: medial malleolus; mma: medial margin of the malleolus; vmcc: ventral margin of the cnemial crest; vpcc: ventral process of the cnemial crest.

crête Abelisauridae Aucasaurus Ekrixinatosaurus +5
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Actualités

Un spinosaure géant à crête, le « héron de l'enfer », découvert dans le Sahara
crête prédateur Niger fossile Spinosaurus
Au cœur du Sahara, des scientifiques ont découvert Spinosaurus mirabilis, un nouveau prédateur spectaculaire couronné d'une crête massive en forme de cimeterre qui aurait pu autrefois briller de couleurs sous le soleil du désert. Découvert dans des gisements de rivières intérieures isolées au Niger, le fossile réécrit ce que nous pensions savoir sur les dinosaures spinosaures, suggérant qu'ils n'étaient pas des chasseurs entièrement aquatiques mais de puissants échassiers traquant les poissons dans les cours d'eau boisés à des centaines de kilomètres de la mer.
23/02/2026 sciencedaily ⚙ Traduction automatique
Une momie de dinosaure retrouvée avec des sabots et une crête cachée
crête reconstitution Edmontosaurus
Les scientifiques ont reconstitué le profil le plus complet et le plus réaliste d’Edmontosaurus annectens grâce à un processus de préservation extraordinaire appelé modèle d’argile, dans lequel un mince film d’argile a capturé la peau, les écailles, les pointes et même les sabots du dinosaure en trois dimensions. En combinant des «momies» récemment fouillées, une imagerie avancée et une reconstruction artistique, les chercheurs ont révélé une haute crête, une seule rangée de pointes de queue, de délicates écailles ressemblant à des cailloux et, ce qui est le plus remarquable, le plus ancien sabot connu.
30/11/2025 sciencedaily ⚙ Traduction automatique