dent

Partie anatomique

59 image(s) · 34 Actualités

Galerie d'images

Photographs and interpretive drawings of the titanosauroid Bonitasaura salgadoi Apesteguía, 2004 from the Upper Neuquén Group of Río Negro
province, Patagonia, MPCA 460. A–D. Right dentary in dorsal (A), medial (B), ventral (C), and lateral (D) views. E. Isolated tooth in labial (E1) and lateral

(E2) views; lingual view detail and schematic cross section showing hexagonal faceting (E3).

Photographs and interpretive drawings of the titanosauroid Bonitasaura salgadoi Apesteguía, 2004 from the Upper Neuquén Group of Río Negro province, Patagonia, MPCA 460. A–D. Right dentary in dorsal (A), medial (B), ventral (C), and lateral (D) views. E. Isolated tooth in labial (E1) and lateral (E2) views; lingual view detail and schematic cross section showing hexagonal faceting (E3).

dent dessin Bonitasaura
Cranial and postcranial sauropod remains from sediments of the Praia da Amoreira-Porto Novo Fm. of the coastal sector of Praia da Consolação-Lourinhã-Torres Vedras: 1-2, ?Turiasauria indet., heart-shaped tooth (SHN (JJS) 142, Praia da Corva) in lingual (1) and labial (2) views; 3-4, ?Macronaria indet., spatulate tooth (SHN 513, Porto Novo) in labial (3) and lingual (4) views; 5-6, Macronaria indet., compressed cone-chisel-shaped tooth (SHN 578, Valmitão) in lingual (5) and labial (6) views; 7-8, Eusauropoda indet., partial left maxilla (SHN 582, Praia dos Frades) in lateral (7) and posterior (8) views; 9, Titanosauriformes indet., posterior caudal vertebra (SHN 523, Praia da Corva) in right view; 10-12, Diplodocinae indet., partial skeleton (SHN (JJS) 177, Valmitão), anterior caudal neural spine in posterior view (10), anterior caudal centrum in right view (11) and left ischium in medial view (12); 13-16, holotype material of Zby atlanticus (ML 368, Vale de Pombas), right ungueal I in lateral view (13), right humerus in anterior view (14), right radius in posterior view (15), right ulna in lateral view (16); 17, Eusauropoda indet., partial distal forked-chevron (SHN 587, Praia da Corva) in medial view; 18, Sauropoda indet., pedal ungueal I (SHN 524, Praia de Pedrogãos) in lateral view; 19-22, Macronarian indet., partial skeleton (SHN 181, Valmitão), right astragalus in proximal view (19), anterior caudal vertebra in anterior view (20), right tibia in lateral view (21) and right fibula in medial view (22); 23-24, Eusauropoda indet., partial skeleton (SHN 530, Praia da Corva), anterior chevron in anterior view (23) and anterior caudal vertebra in posterior view (24); 25, cf. Duriatitan humerocristatus, humerus (MG 4976, Praia dos Frades) in anterior view; 26, Sauropoda indet., partial skeleton (SHN 534, Santa Rita), middle chevron in posterior view; 27, Diplodocidae indet., partial skeleton (SHN (JJS) 179, Praia Vermelha), dorsal/caudal (?) neural spine in posterior view; 28-30, holotype material of Dinheirosaurus lourinhanensis (ML 414, Porto Dinheiro), proximal end of a dorsal rib in anterior view (28), anterior caudal neural spine in posterior view (29) and articulated dorsal vertebrae in right view (30). Black scale bar: 10 cm; Grey scale bar: 5 cm; Brown scale bar: 1 cm. See Anatomical abbreviations for abbreviations.

Cranial and postcranial sauropod remains from sediments of the Praia da Amoreira-Porto Novo Fm. of the coastal sector of Praia da Consolação-Lourinhã-Torres Vedras: 1-2, ?Turiasauria indet., heart-shaped tooth (SHN (JJS) 142, Praia da Corva) in lingual (1) and labial (2) views; 3-4, ?Macronaria indet., spatulate tooth (SHN 513, Porto Novo) in labial (3) and lingual (4) views; 5-6, Macronaria indet., compressed cone-chisel-shaped tooth (SHN 578, Valmitão) in lingual (5) and labial (6) views; 7-8, Eusauropoda indet., partial left maxilla (SHN 582, Praia dos Frades) in lateral (7) and posterior (8) views; 9, Titanosauriformes indet., posterior caudal vertebra (SHN 523, Praia da Corva) in right view; 10-12, Diplodocinae indet., partial skeleton (SHN (JJS) 177, Valmitão), anterior caudal neural spine in posterior view (10), anterior caudal centrum in right view (11) and left ischium in medial view (12); 13-16, holotype material of Zby atlanticus (ML 368, Vale de Pombas), right ungueal I in lateral view (13), right humerus in anterior view (14), right radius in posterior view (15), right ulna in lateral view (16); 17, Eusauropoda indet., partial distal forked-chevron (SHN 587, Praia da Corva) in medial view; 18, Sauropoda indet., pedal ungueal I (SHN 524, Praia de Pedrogãos) in lateral view; 19-22, Macronarian indet., partial skeleton (SHN 181, Valmitão), right astragalus in proximal view (19), anterior caudal vertebra in anterior view (20), right tibia in lateral view (21) and right fibula in medial view (22); 23-24, Eusauropoda indet., partial skeleton (SHN 530, Praia da Corva), anterior chevron in anterior view (23) and anterior caudal vertebra in posterior view (24); 25, cf. Duriatitan humerocristatus, humerus (MG 4976, Praia dos Frades) in anterior view; 26, Sauropoda indet., partial skeleton (SHN 534, Santa Rita), middle chevron in posterior view; 27, Diplodocidae indet., partial skeleton (SHN (JJS) 179, Praia Vermelha), dorsal/caudal (?) neural spine in posterior view; 28-30, holotype material of Dinheirosaurus lourinhanensis (ML 414, Porto Dinheiro), proximal end of a dorsal rib in anterior view (28), anterior caudal neural spine in posterior view (29) and articulated dorsal vertebrae in right view (30). Black scale bar: 10 cm; Grey scale bar: 5 cm; Brown scale bar: 1 cm. See Anatomical abbreviations for abbreviations.

dent vertèbre Lourinhã holotype +7
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
Partial skeleton of Claosaurus agilis (holotype YPM 1190).

(A) Right ilium in lateral view. (B) Partial postorbital in lateral view. (C) Distal process of the right ischium in lateral view. (D) Mounted partial skeleton of YPM 1190. (E) Coronoid process of the right dentary in lateral view. (F) Fragment of maxilla in lateral view. (G) Detail of the maxillary tooth crowns in (F). (H) Fragment of maxilla in lateral view. (I) Detail of a maxillary tooth crown in (H).
Taxons Claosaurus

Partial skeleton of Claosaurus agilis (holotype YPM 1190). (A) Right ilium in lateral view. (B) Partial postorbital in lateral view. (C) Distal process of the right ischium in lateral view. (D) Mounted partial skeleton of YPM 1190. (E) Coronoid process of the right dentary in lateral view. (F) Fragment of maxilla in lateral view. (G) Detail of the maxillary tooth crowns in (F). (H) Fragment of maxilla in lateral view. (I) Detail of a maxillary tooth crown in (H).

dent holotype Claosaurus partiel +1
natural silicone cast of the holotype of Lycorhinus angustidens (UCRC PVC10). Abbreviations: 3-10 dentary tooth 3-10 Fa-j tooth-to-tooth wear facet a-j f accessory facet. Scale bars equal 1 cm in C and 3 cm in D.
Taxons Lycorhinus

natural silicone cast of the holotype of Lycorhinus angustidens (UCRC PVC10). Abbreviations: 3-10 dentary tooth 3-10 Fa-j tooth-to-tooth wear facet a-j f accessory facet. Scale bars equal 1 cm in C and 3 cm in D.

écaille dent moulage holotype +1
Tooth of cf. Zapsalis, with close up of denticles. Specimen UALVP 49582 from the Milk River Formation.
Taxons Zapsalis

Tooth of cf. Zapsalis, with close up of denticles. Specimen UALVP 49582 from the Milk River Formation.

dent Milk River spécimen Zapsalis +1
Genus—Nuthetes. (Lacertilia).
Fig. 13 and 14. Portions of mandible and teeth of Nuthetes destructor.
Fig. 15. Five detached teeth of do.

Fig. 16. Side view of crown of a tooth of do., magn.
Taxons Nuthetes

Genus—Nuthetes. (Lacertilia). Fig. 13 and 14. Portions of mandible and teeth of Nuthetes destructor. Fig. 15. Five detached teeth of do. Fig. 16. Side view of crown of a tooth of do., magn.

dent Nuthetes
Tooth of cf. Pectinodon.
Taxons Pectinodon

Tooth of cf. Pectinodon.

dent Pectinodon
Partial skull of Shastasaurus pacificus (UCMP 9017) from the Late Triassic of California, USA, in (A) lateral, (B) dorsal, and (C) anterolateral view.

Based on this skull, Shastasaurus has repeatedly been reconstructed with a long, tooth-bearing rostrum. However, note the slenderness of the lower jaw (B, C) and the strong anterior taper of the snout (B), both of which are more consistent with the abbreviated and toothless snout of Shastasaurus liangae comb. nov. than with the traditional long-snouted reconstruction of this skull (as, e.g., in references [22] and [23]).
Taxons Shastasaurus

Partial skull of Shastasaurus pacificus (UCMP 9017) from the Late Triassic of California, USA, in (A) lateral, (B) dorsal, and (C) anterolateral view. Based on this skull, Shastasaurus has repeatedly been reconstructed with a long, tooth-bearing rostrum. However, note the slenderness of the lower jaw (B, C) and the strong anterior taper of the snout (B), both of which are more consistent with the abbreviated and toothless snout of Shastasaurus liangae comb. nov. than with the traditional long-snouted reconstruction of this skull (as, e.g., in references [22] and [23]).

dent États-Unis Trias supérieur Trias +5
Partial skull of Shastasaurus pacificus (UCMP 9017) from the Late Triassic of California, USA, in (A) lateral, (B) dorsal, and (C) anterolateral view.

Based on this skull, Shastasaurus has repeatedly been reconstructed with a long, tooth-bearing rostrum. However, note the slenderness of the lower jaw (B, C) and the strong anterior taper of the snout (B), both of which are more consistent with the abbreviated and toothless snout of Shastasaurus liangae comb. nov. than with the traditional long-snouted reconstruction of this skull (as, e.g., in references [22] and [23]).
Taxons Merriamosauria

Partial skull of Shastasaurus pacificus (UCMP 9017) from the Late Triassic of California, USA, in (A) lateral, (B) dorsal, and (C) anterolateral view. Based on this skull, Shastasaurus has repeatedly been reconstructed with a long, tooth-bearing rostrum. However, note the slenderness of the lower jaw (B, C) and the strong anterior taper of the snout (B), both of which are more consistent with the abbreviated and toothless snout of Shastasaurus liangae comb. nov. than with the traditional long-snouted reconstruction of this skull (as, e.g., in references [22] and [23]).

dent États-Unis Trias supérieur Trias +5
Partial skull of Shastasaurus pacificus (UCMP 9017) from the Late Triassic of California, USA, in (A) lateral, (B) dorsal, and (C) anterolateral view.

Based on this skull, Shastasaurus has repeatedly been reconstructed with a long, tooth-bearing rostrum. However, note the slenderness of the lower jaw (B, C) and the strong anterior taper of the snout (B), both of which are more consistent with the abbreviated and toothless snout of Shastasaurus liangae comb. nov. than with the traditional long-snouted reconstruction of this skull (as, e.g., in references [22] and [23]).
Taxons Euichthyosauria

Partial skull of Shastasaurus pacificus (UCMP 9017) from the Late Triassic of California, USA, in (A) lateral, (B) dorsal, and (C) anterolateral view. Based on this skull, Shastasaurus has repeatedly been reconstructed with a long, tooth-bearing rostrum. However, note the slenderness of the lower jaw (B, C) and the strong anterior taper of the snout (B), both of which are more consistent with the abbreviated and toothless snout of Shastasaurus liangae comb. nov. than with the traditional long-snouted reconstruction of this skull (as, e.g., in references [22] and [23]).

dent États-Unis Trias supérieur Trias +5
A–C, tooth of “Paronychodon” (NMMNH P-30233) showing lingual (A), labial (B), and basal (C) views; D–F, tooth of “Paronychodon” (NMMNH P-30218), showing lingual (D), labial (E), and basal (F) views;
Taxons Paronychodon

A–C, tooth of “Paronychodon” (NMMNH P-30233) showing lingual (A), labial (B), and basal (C) views; D–F, tooth of “Paronychodon” (NMMNH P-30218), showing lingual (D), labial (E), and basal (F) views;

dent Paronychodon
Tooth of cf. Richardoestesia gilmorei with close up of denticles.
Taxons Richardoestesia

Tooth of cf. Richardoestesia gilmorei with close up of denticles.

dent Richardoestesia
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Actualités

Une « plante grimpante des sables » géante vieille de 240 millions d’années découverte cachée dans un mur de soutènement
dent prédateur Australie fossile découverte squelette
Un fossile oublié caché dans un mur de jardin s’est avéré être l’une des découvertes préhistoriques les plus remarquables d’Australie. Les scientifiques ont maintenant identifié l'amphibien Arenaerpeton supinatus, vieux de 240 millions d'années, révélant un squelette presque parfaitement conservé, avec de rares traces de peau. Cet ancien prédateur de rivière, mesurant environ 1,2 mètre de long, ressemblait un peu à une salamandre géante, mais il était plus volumineux et armé de redoutables dents en forme de crocs.
06/05/2026 sciencedaily ⚙ Traduction automatique
Early Platypuses Had Strong Teeth and Powerful Jaws, Fossils Show
Les premiers ornithorynques avaient des dents solides et des mâchoires puissantes, selon des fossiles
mâchoire dent Australie fossile formation
De nouveaux fossiles de la Formation de Namba, en Australie méridionale, révèlent qu'il y a 25 millions d'années, Obdurodon insignis prospérait dans les lacs intérieurs luxuriants aux côtés de dauphins d'eau douce et d'autres espèces aujourd'hui disparues. L'article Les premiers ornithorynques avaient des dents solides et des mâchoires puissantes, Fossils Show est apparu en premier sur Sci.News : Breaking Science News.
28/04/2026 sci-news ⚙ Traduction automatique
La « plus vieille pieuvre » du monde n’a jamais été une pieuvre
dent fossile découverte évolution
Un célèbre fossile du « plus vieux poulpe » a été exposé comme un cas d’identité erronée. Une imagerie avancée a révélé des dents cachées, montrant qu'il s'agissait en réalité d'un nautile et non d'une pieuvre. La confusion venait de la décomposition qui avait modifié sa forme avant la fossilisation. Cette découverte réécrit une partie de l’histoire de l’évolution, repoussant la véritable origine des poulpes bien plus tard dans le temps.
07/04/2026 sciencedaily ⚙ Traduction automatique
Des dents vieilles de 2 700 ans révèlent la vie cachée des Italiens de l'âge du fer
dent alimentation croissance Italie
Les dents de l’âge du fer du sud de l’Italie sont devenues des capsules temporelles, préservant les détails intimes de l’enfance et de l’alimentation. Les lignes de croissance dans l'émail révèlent des moments de stress au début de la vie, tandis que la plaque durcie contient des restes microscopiques de céréales, de légumineuses et d'aliments fermentés. Les résultats suggèrent une communauté dotée de ressources alimentaires diverses et de solides liens méditerranéens. Même un petit échantillon offre un aperçu saisissant de la façon dont les gens vivaient, grandissaient et mangeaient il y a près de trois millénaires.
04/03/2026 sciencedaily ⚙ Traduction automatique
Cet animal ancien fut l'un des premiers à manger des plantes sur terre
dent fossile crâne
Il y a des centaines de millions d’années, les premiers animaux à ramper sur terre étaient de purs mangeurs de viande, alors même que les plantes avaient déjà envahi le paysage. Aujourd’hui, les scientifiques ont découvert un fossile vieux de 307 millions d’années qui réécrit cette histoire : l’un des premiers vertébrés terrestres connus à avoir commencé à manger des plantes. L'animal, nommé Tyrannoroter heberti, était une créature trapue de la taille d'un ballon de football avec un crâne rempli de dents spécialisées conçues pour écraser et broyer la végétation.
11/02/2026 sciencedaily ⚙ Traduction automatique
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