Recherche dans les forums
Résultat de votre recherche : 4 résultats
Re: Série Terra Nova, bientôt ?
Posté par Croc en stock, dans Bavardage,
le
19 646
Ça dépend des régions, mais d'une manière générale on connaît encore peu de dinosaures d'il y a 85 millions d'années (étage Santonien).
En Amérique du Sud il y a des titanosaures (Bonitasaura et Traukutitan) accompagnés de quelques théropodes fragmentaires (Alvarezsaurus, Achillesaurus, Velocisaurus et un abélisauridé indéterminé) et divers crocodyliformes terrestres comme Notosuchus.
En Amérique du Nord, pour le Santonien, on trouve surtout des formations rocheuses laissées par la Mer Intérieure nord américaine avec des gisements à reptiles marins, poissons géants carnassiers comme les Xiphactinus et autres requins et à ptérosaures comme le Pteranodon. Concernant les dinos, ces niveaux ont livrés une carcasse flottée d'un hadrosaure nommé Claosaurus et plusieurs spécimens de l'ankylosaure Niobrarasaurus (présent aussi dans le Coniacien).
En Mongolie, la Formation Djadochta (qui a livrée notamment Velociraptor mongoliensis, Protoceratops andrewsi et bien d'autres) est datée avec incertitude entre le Santonien supérieur et le Campanien supérieur (entre 84 et 75 millions d'années). Des niveaux un peu plus anciens et datant peut être du Santonien ont livrés le pachycéphalosaure Goyocephale.
En Europe les dinos du Santonien proviennent surtout de Hongrie avec l'ankylosaure Hungarosaurus, le cératopsien Ajkaceratops, le théropode Pneumatoraptor et un ornithopode rhabdodontidé sans nom. Il y a aussi le Craspedodon (connu que par des dents) de Belgique qui est peut être un cératopsien.
Les dinosaures du Santonien sont encore inconnus en Afrique, à Madagascar, en Inde, en Australie et en Antarctique.
En ce qui concerne Terra Nova, les animaux aperçus dans le trailer laissent à penser que les personnages se trouveraient en Amérique du Sud. Mais bon on verra bien si il nous mélange des bestioles de plusieurs époques et de continents différents, ce qui ne serait pas surprenant.
Re: Dinosaures de 2010
Posté par Webmaster, dans Actualités des dinosaures,
le
53 951
Suite et fin de la liste des dinos 2010:
50. Mojoceratops perifania - n.g., n.sp.
51. Ojoceratops fowleri - n.g., n.sp.
52. Paludititan nalatzensis - n.g., n.sp.
53. Panamericansaurus schroederi - n.g., n.sp.
54. Pneumatoraptor fodori - n.g., n.sp.
55. Proplanicoxa galtoni - n.g., n.sp.
56. Psittacosaurus gobiensis - n.sp. (Publié en ligne en 2009)
57. Qiupalong henanensis - n.g., n.sp. (Article sous presse)
58. Rahiolisaurus gujaratensis - n.g., n.sp.
59. Rubeosaurus ovatus - n.g., n.sp. (Remplace Styracosaurus ovatus)
60. Sanjuansaurus gordilloi - n.g., n.sp.
61. Sarahsaurus aurifontanalis - n.g., n.sp.
62. Seitaad ruessi - n.g., n.sp.
63. Sellacoxa pauli - n.g., n.sp.
64. Shenqiornis mengi - n.g, n.sp. (AVES - Enantiornithes)
65. Shenshiornis primita - n.g., n.sp. (AVES - Sapeornithidae; = junior de Sapeornis chaoyangensis?)
66. Sinoceratops zhuchengensis - n.g., n.sp.
67. Tapuiasaurus sp. - n.g. (nomen nudum; = Tapuisauro?)
68. Tatankaceratops sacrisonorum - n.g., n.sp.
69. Texacephale langstoni - n.g., n.sp.
70. Tianyuraptor ostromi - n.g., n.sp.
71. Tonganosaurus hei - n.g., n.sp.
72. Torilion dawsoni - n.g. (Remplace Iguanodon dawsoni; conflit avec Barilium)
73. Utahceratops gettyi - n.g., n.sp.
74. Vagaceratops irvinensis - n.g.
75. Wadhurstia fittoni - n.g. (Remplace Iguanodon fittoni; conflit avec Hypselospinus)
76. Xiongguanlong baimoensis - n.g, n.sp. (Publié en ligne en 2009)
77. Xixianykus zhangi - n.g., n.sp.
78. Xixiasaurus henanensis - n.g, n.sp.
79. Xixiposaurus suni - n.g., n.sp.
80. Yizhousaurus sunae - n.g., n.sp. (nomen nudum)
81. Zhongjianornis yangi - n.g., n.sp. (AVES)
82. Zhuchengceratops inexpectus - n.g., n.sp.
83. Zuolong salleei - n.g., n.sp.
50. Mojoceratops perifania - n.g., n.sp.
51. Ojoceratops fowleri - n.g., n.sp.
52. Paludititan nalatzensis - n.g., n.sp.
53. Panamericansaurus schroederi - n.g., n.sp.
54. Pneumatoraptor fodori - n.g., n.sp.
55. Proplanicoxa galtoni - n.g., n.sp.
56. Psittacosaurus gobiensis - n.sp. (Publié en ligne en 2009)
57. Qiupalong henanensis - n.g., n.sp. (Article sous presse)
58. Rahiolisaurus gujaratensis - n.g., n.sp.
59. Rubeosaurus ovatus - n.g., n.sp. (Remplace Styracosaurus ovatus)
60. Sanjuansaurus gordilloi - n.g., n.sp.
61. Sarahsaurus aurifontanalis - n.g., n.sp.
62. Seitaad ruessi - n.g., n.sp.
63. Sellacoxa pauli - n.g., n.sp.
64. Shenqiornis mengi - n.g, n.sp. (AVES - Enantiornithes)
65. Shenshiornis primita - n.g., n.sp. (AVES - Sapeornithidae; = junior de Sapeornis chaoyangensis?)
66. Sinoceratops zhuchengensis - n.g., n.sp.
67. Tapuiasaurus sp. - n.g. (nomen nudum; = Tapuisauro?)
68. Tatankaceratops sacrisonorum - n.g., n.sp.
69. Texacephale langstoni - n.g., n.sp.
70. Tianyuraptor ostromi - n.g., n.sp.
71. Tonganosaurus hei - n.g., n.sp.
72. Torilion dawsoni - n.g. (Remplace Iguanodon dawsoni; conflit avec Barilium)
73. Utahceratops gettyi - n.g., n.sp.
74. Vagaceratops irvinensis - n.g.
75. Wadhurstia fittoni - n.g. (Remplace Iguanodon fittoni; conflit avec Hypselospinus)
76. Xiongguanlong baimoensis - n.g, n.sp. (Publié en ligne en 2009)
77. Xixianykus zhangi - n.g., n.sp.
78. Xixiasaurus henanensis - n.g, n.sp.
79. Xixiposaurus suni - n.g., n.sp.
80. Yizhousaurus sunae - n.g., n.sp. (nomen nudum)
81. Zhongjianornis yangi - n.g., n.sp. (AVES)
82. Zhuchengceratops inexpectus - n.g., n.sp.
83. Zuolong salleei - n.g., n.sp.
Dinosaures de 2010
Posté par Webmaster, dans Actualités des dinosaures,
le
93 886
Après 2 premiers mois chargés de dinoactualités, voici la liste actuelle des nouveaux dinosaures de 2010:
1 Aardonyx celestae - n.g, n.sp.
2 Abydosaurus mcintoshi - n.g., n.sp.
3 Arkharavia heterocoelica - n.g., n.sp.
4 Banji long - n.g., n.sp.
5 Barackosaurus sp. - n.g, n.sp. (nomen nudum)
6 Beishanlong grandis - n.g., n.sp.
7 Bistahieversor sealeyi - n.g., n.sp.
8 Brontodiplodocus sp. - n.g, n.sp. (nomen nudum)
9 Cruxicheiros newmanorum - n.g, n.sp.
10 Diabloceratops eatoni - n.g., n.sp. (nomen nudum)
11 Flexomornis howei - n.g., n.sp.
12 Fruitadens haagarorum - n.g, n.sp.
13 Haplocheirus sollers - n.g., n.sp.
14 Hollanda luceria - n.g., n.sp.
15 Luoyanggia liudianensis - n.g, n.sp.
16 Pneumatoraptor fodori - n.g., n.sp.
17 Psittacosaurus gobiensis - n.sp.
18 Shenqiornis mengi - n.g, n.sp.
19 Texacephale langstoni - n.g., n.sp.
20 Tianyuraptor ostromi - n.g., n.sp.
21 Xianshanosaurus shijiagouensis - n.g, n.sp.
22 Xiongguanlong baimoensis - n.g, n.sp.
23 Xixiasaurus henanensis - n.g, n.sp.
24 Zhongjianornis yangi - n.g., n.sp.
1 Aardonyx celestae - n.g, n.sp.
2 Abydosaurus mcintoshi - n.g., n.sp.
3 Arkharavia heterocoelica - n.g., n.sp.
4 Banji long - n.g., n.sp.
5 Barackosaurus sp. - n.g, n.sp. (nomen nudum)
6 Beishanlong grandis - n.g., n.sp.
7 Bistahieversor sealeyi - n.g., n.sp.
8 Brontodiplodocus sp. - n.g, n.sp. (nomen nudum)
9 Cruxicheiros newmanorum - n.g, n.sp.
10 Diabloceratops eatoni - n.g., n.sp. (nomen nudum)
11 Flexomornis howei - n.g., n.sp.
12 Fruitadens haagarorum - n.g, n.sp.
13 Haplocheirus sollers - n.g., n.sp.
14 Hollanda luceria - n.g., n.sp.
15 Luoyanggia liudianensis - n.g, n.sp.
16 Pneumatoraptor fodori - n.g., n.sp.
17 Psittacosaurus gobiensis - n.sp.
18 Shenqiornis mengi - n.g, n.sp.
19 Texacephale langstoni - n.g., n.sp.
20 Tianyuraptor ostromi - n.g., n.sp.
21 Xianshanosaurus shijiagouensis - n.g, n.sp.
22 Xiongguanlong baimoensis - n.g, n.sp.
23 Xixiasaurus henanensis - n.g, n.sp.
24 Zhongjianornis yangi - n.g., n.sp.
Re: [2010] Brèves paléontologiques
Posté par Lolo, dans Actualités des dinosaures,
le
19 530
X
Un nouveau dino dans:
Ősi, A., Apesteguía, S.m & Kowalewski, M. (2010) Non-avian theropod dinosaurs from the early Late Cretaceous of Central Europe, Cretaceous Research (2010), doi: 10.1016/ j.cretres.2010.01.001
Quantitative and qualitative analyses of isolated teeth and postcranial elements of nonavian theropod dinosaurs from the Upper Cretaceous (Santonian) Csehbánya Formation, Iharkút (western Hungary) indicate that these remains represent multiple dinosaur groups. Based on comparative and statistical analyses, 58 teeth and tooth fragments are identified as belonging to medium-sized basal tetanuran theropods that may have represented the toppredator of the terrestrial Iharkút ecosystem. These teeth are almost identical with the two ‘Megalosaurus pannoniensis' teeth from the lower Campanian of Muthmannsdorf (Austria) and show a notable similarity to teeth of the Middle Jurassic M. bucklandii and the Lower Cretaceous ‘M. dunkeri' from England. A single pedal ungual phalanx is interpreted as the oldest European occurrence of Late Cretaceous abelisaurids, as suggested by a ventral groove and bifurcated grooves laterally bordering a convex, triangular area. Small-bodied paravian theropods are found to be the best represented group in Iharkút, including teeth, caudal vertebrae, a metacarpal III, manual phalanges, and a fragmentary left tibia. A particularly notable paravian remain is a complete left scapulocoracoid possessing a unique pneumatic foramen ventral to the coracoid foramen. This specimen is assigned to Pneumatoraptor fodori n. g. et sp. Finally, numerous postcranial elements of Theropoda indet. were recovered, including a fragmentary sacrum that offers new insights into the sacral pneumaticity of theropods. The presence of these theropods in the Santonian Iharkút ecosystem provides the first evidence that during the early Late Cretaceous the Mediterranean archipelago was inhabited by both Gondwanan and Euramerican members of theropod dinosaurs. Consistent with data available for other archosaurian taxa, the close relationship of the basal tetanuran teeth with much older forms suggests that the Iharkút area may have functioned as a refugium in the early Late Cretaceous Mediterranean archipelago.
Pneumatoraptor est classé parmi les Paraves
Un nouveau dino dans:
Ősi, A., Apesteguía, S.m & Kowalewski, M. (2010) Non-avian theropod dinosaurs from the early Late Cretaceous of Central Europe, Cretaceous Research (2010), doi: 10.1016/ j.cretres.2010.01.001
Quantitative and qualitative analyses of isolated teeth and postcranial elements of nonavian theropod dinosaurs from the Upper Cretaceous (Santonian) Csehbánya Formation, Iharkút (western Hungary) indicate that these remains represent multiple dinosaur groups. Based on comparative and statistical analyses, 58 teeth and tooth fragments are identified as belonging to medium-sized basal tetanuran theropods that may have represented the toppredator of the terrestrial Iharkút ecosystem. These teeth are almost identical with the two ‘Megalosaurus pannoniensis' teeth from the lower Campanian of Muthmannsdorf (Austria) and show a notable similarity to teeth of the Middle Jurassic M. bucklandii and the Lower Cretaceous ‘M. dunkeri' from England. A single pedal ungual phalanx is interpreted as the oldest European occurrence of Late Cretaceous abelisaurids, as suggested by a ventral groove and bifurcated grooves laterally bordering a convex, triangular area. Small-bodied paravian theropods are found to be the best represented group in Iharkút, including teeth, caudal vertebrae, a metacarpal III, manual phalanges, and a fragmentary left tibia. A particularly notable paravian remain is a complete left scapulocoracoid possessing a unique pneumatic foramen ventral to the coracoid foramen. This specimen is assigned to Pneumatoraptor fodori n. g. et sp. Finally, numerous postcranial elements of Theropoda indet. were recovered, including a fragmentary sacrum that offers new insights into the sacral pneumaticity of theropods. The presence of these theropods in the Santonian Iharkút ecosystem provides the first evidence that during the early Late Cretaceous the Mediterranean archipelago was inhabited by both Gondwanan and Euramerican members of theropod dinosaurs. Consistent with data available for other archosaurian taxa, the close relationship of the basal tetanuran teeth with much older forms suggests that the Iharkút area may have functioned as a refugium in the early Late Cretaceous Mediterranean archipelago.
Pneumatoraptor est classé parmi les Paraves