Posté par LanceHall
Posté par Gigy
Merci pour la photo de cette jolie mandibule inférieure de Aeotodactylus lance hall.
Posté par Naldo
A pre-Archaeopteryx troodontid theropod from China
with long feathers on the metatarsus
Dongyu Hu, Lianhai Hou, Lijun Zhang & Xing Xu
Mais je cherche celui sur les couleurs.
Posté par Gigy
Posté par Ahmad
Posté par Lolo
http://www.wired.com/wiredscience/2010/02/spider-fossil/?
The oldest haplogyne spider (Araneae: Plectreuridae), from the Middle Jurassic of China
Paul A. Selden and Diying Huang , naturwissenchaften
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Edité le 09/02/2010 à 17:54 par lolo
Posté par Theropod
Posté par Pyroraptor
Posté par Kuzanaguy
Je sens que ce cher titi va bientôt être renommé Gorgosaurus....tout de même assez différent du genre daspel.
Au fait bonne année à tous,et content de vous retrouver.
Posté par Lolo
Son nom est Xixiasaurus
L'article:
http://www.app.pan.pl/issue.html?issue=forthcoming
Posté par Captbot
Posté par Pyroraptor
Un iguanodontidae du bassin parisien.
http://www.geoforum.fr/index.php?showtopic=15954
Posté par Lolo
Description d'un nouveau Sauropode: Abydosaurus mcintoshi, avec un crane complet (tellement rare !)
Voir:
http://www.cbc.ca/technology/story/2010/02/23/tech-dinosaur-sauropod-skulls.html
http://www.telegraph.co.uk/science/dinosaurs/7298758/Dinosaur-skulls-cast-light-on-new-species.html
- Garcia R.A., and Cerda, I.A. 2010. Dentition and histology in titanosaurian dinosaur embryos from Upper Cretaceous of Patagonia, Argentina. Palaeontology.
des beaux embryons de Sauropodes
- Fechner, R. 2009. Morphofunctional Evolution of the Pelvic Girdle and Hindlimb of Dinosauromorpha on the Lineage to Sauropoda. Fakultät für Geowissenschaften, Ludwigs Maximilians Universität, Munich, 197 pp.
gratos ici:
http://edoc.ub.uni-muenchen.de/10954/1/Fechner_Regina.pdf
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Edité le 24/02/2010 à 01:03 par lolo
Posté par Lolo
and L. A. Tsuji. 2010. Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira. Nature
Le truc est Asilisaurus kongwe gen. et sp. nov.
Le résumé:
The early evolutionary history of Ornithodira (avian-line
archosaurs) has hitherto been documented by incomplete (Lagerpeton) or
unusually specialized forms (pterosaurs and Silesaurus). Recently, a
variety of Silesaurus-like taxa have been reported from the Triassic Period
of both Gondwana and Laurasia, but their relationships to each other and to
dinosaurs remain a subject of debate. Here we report on a new avian-line
archosaur from the early Middle Triassic (Anisian) of Tanzania.
Phylogenetic analysis places Asilisaurus kongwe gen. et sp. nov. as an
avian-line archosaur and a member of the Silesauridae, which is here
considered the sister taxon to Dinosauria. Silesaurids were diverse and had
a wide distribution by the Late Triassic, with a novel ornithodiran bauplan
including leaf-shaped teeth, a beak-like lower jaw, long, gracile limbs,
and a quadrupedal stance. Our analysis suggests that the dentition and diet
of silesaurids, ornithischians and sauropodomorphs evolved independently
from a plesiomorphic carnivorous form. As the oldest avian-line archosaur,
Asilisaurus demonstrates the antiquity of both Ornithodira and the
dinosaurian lineage. The initial diversification of Archosauria, previously
documented by crocodilian-line archosaurs in the Anisian, can now be shown
to include a contemporaneous avian-line radiation. The unparalleled
taxonomic diversity of the Manda archosaur assemblage indicates that
archosaur diversification was well underway by the Middle Triassic or
earlier.
Voyez ici: http://chinleana.blogspot.com/
Posté par Lolo
WANG Xuri, Jingmai K. O'Connor, ZHAO Bo, Luis M. Chiappe, Gao Chunling, Cheng Xiaodong (2010). New Species of Enantiornithes (Aves: Ornithothoraces) from the Qiaotou Formation in Northern Hebei, China. Acta Geologica Sinica 84(2): 247-256
Résumé: We report on a new species of enantiornithine bird from the Lower Cretaceous Qiaotou Formation of northern Hebei, China. The new taxon, Shenqiornis mengi gen. et sp. nov., possesses several enantiornithine synapomorphies but is unique from other known species. The specimen has a well-preserved skull that reveals new information about enantiornithine cranial morphology. The new taxon possesses a large postorbital with a long tapering jugal process indicating that some enantiornithines may have had a fully diapsid skull, as in Confuciusornis. The tooth morphology of the specimen is unique and likely represents a previously unknown trophic specialization within Enantiornithes
Posté par Lolo
Lü, J. (2010). A New Boreopterid Pterodactyloid Pterosaur from the Early Cretaceous Yixian Formation of Liaoning Province, Northeastern China. Acta Geologica Sinica 84(2): 241-246
Résumé: A new boreopterid pterosaur: Zhenyuanopterus longirostris gen. et sp. nov. from the Yixian Formation of western Liaoning is erected, based on the complete skeleton with a skull and lower jaws preserved. It is characterized by: a large boreopterid pterosaur with a high number of teeth, where the anterior teeth are much larger than posterior ones; the length of the dorsal + sacral vertebrae is nearly half the length of the skull; ratio of the length of the humerus to metacarpal IV is approximately 91% and the, humerus, femur and third wing phalanx are all equal in length and the feet are specially small. It represents the largest boroepterid pterosaur discovered from western Liaoning and its surrounding areas so far
Posté par Webmaster
M'intéresse celui-là...
L'abstract est un peu vague, mais il pourrait être intéressant.
Posté par Lolo
Posté par Lolo
asymmetry of the carpal joint and the evolution of wing folding in
maniraptoran theropod dinosaurs.
Proceedings Royal Society B
http://rspb.royalsocietypublishing.org/content/early/2010/02/24/rspb.2009.2281.full.pdf+html
http://rspb.royalsocietypublishing.org/content/suppl/2010/02/24/rspb.2009.2281.DC1/rspb20092281supp1.pdf
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Edité le 09/03/2010 à 17:23 par lolo