Search publications of the members of the Royal Belgian institute of natural Sciences
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Early Cretaceous dinosaurs remains from Baudour (Belgium)
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Mesofossil plant remains from the Barremian-Aptian of hautrage (Mons Basin, Belgium) with taphonomy, palaeoecology and palaeoenvironment insights.
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3D modelling of the palaeozoic top surface in the Bernissart area and integration of data from boreholes drilled in the Iguanodon Sinkhole.
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Reconstruction of the Iguanodon environment based on the sedimentological study of the wealden facies in and around the Bernissart natural pit, Mons Basin (Belgium)
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Geodynamic and tectonic context of Iguanodon's deposits in the Mons Basin.
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Stratigraphie des sédiments à faciès wealdien dans le Bassin de Mons (Belgique).
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La Formation des Argiles d'Hautrage de la carrière Danube-Bouchon (Saint-Ghislain, Belgique) : un enregistrement de la naissance et des premiers mouvements du Bassin de Mons au Crétacé Inférieur.
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Carbon-isotope of fossil wood and dispersed organic matter from terrestrial Wealden facies of Hautrage (Mons Basin, Belgium).
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The evolution of the sedimentary environment in the lower river Scheldt valley (Belgium) during the last 13,000 a BP
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Membership news TM Jean-Georges Casier
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La Formation des schistes noires de Matagne et l'extinction du Dévonien Supérieur
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Massive soil erosion during the Late Devonian mass extinction and the current biotic crisis
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The Matagne black shale Formation and the Late Devonian mass extinction
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Massive soil erosion and the Late Devonian mass extinction
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New hadrosaurid dinosaurs from the uppermost Cretaceous of north-eastern China
- Several hundred disarticulated dinosaur bones have been recovered from a large quarry at Wulaga (Heilongjiang Province, China), in the Upper Cretaceous (Maastrichtian) Yuliangze Formation. The Wulaga quarry can be regarded as a monodominant bonebed: more than 80% of the bones belong to a new lambeosaurine hadrosaurid, Sahaliyania elunchunorum gen. et sp. nov. This taxon is characterised by long and slender paroccipital processes, a prominent lateral depression on the dorsal surface of the frontal, a quadratojugal notch that is displaced ventrally on the quadrate, and a prepubic blade that is asymmetrically expanded, with an important emphasis to the dorsal side. Phylogenetic analysis shows that Sahaliyania is a derived lambeosaurine that forms a monophyletic group with the corythosaur and parasauroloph clades. Nevertheless, the exact position of Sahaliyania within this clade cannot be resolved on the basis of the available material. Besides Sahaliyania, other isolated bones display a typical hadrosaurine morphology and are referred to Wulagasaurus dongi gen. et sp. nov., a new taxon characterised by the maxilla pierced by a single foramen below the jugal process, a very slender dentary not pierced by foramina, and by the deltopectoral crest (on the humerus) oriented cranially. Phylogenetic analysis indicates that Wulagasaurus is the most basal hadrosaurine known to date. Phylogeographic data suggests that the hadrosaurines, and thus all hadrosaurids, are of Asian origin, which implies a relatively long ghost lineage of approximately 13 million years for basal hadrosaurines in Asia.
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Taphonomy and Age Profile of a Latest Cretaceous Dinosaur Bone Bed in Far Eastern Russia
- A large dinosaur bone bed has been investigated in the Udurchukan Formation (?late Maastrichtian) at Blagoveschensk, Far Eastern Russia. The observed mixture of unstratified fine and coarse sediments in the bone bed is typical for sediment-gravity-flow deposits. It is postulated that sediment gravity flows, originating from the uplifted areas at the borders of the Zeya-Bureya Basin, reworked the dinosaur bones and teeth as a monodominant bone bed. Fossils of the lambeosaurine Amurosaurus riabinini form >90% of the recovered material. The low number of associated skeletal elements at Blagoveschensk indicates that the carcasses were disarticulated well before reworking. Although shed theropod teeth have been found in the bone bed, <2% of the bones exhibit potential tooth marks; scavenging activity was therefore limited, or scavengers had an abundance of prey at hand and did not have to actively seek out bones for nutrients. Perthotaxic features are very rare on the bones, implying that they were not exposed subaerially for any significant length of time before reworking and burial. The underrepresentation of light skeletal elements, the dislocation of the dental batteries, and the numerous fractured long bones suggest that most of the fossils were reworked. The random orientation of the elements might indicate a sudden end to transport before stability could be reached. The size-frequency distributions of the femur, tibia, humerus, and dentary elements reveal an overrepresentation of late juveniles and small subadult specimens, indicative of an attritional death profile for the Amurosaurus fossil assemblage. It is tentatively postulated that the absence of fossils attributable to nestling or early juvenile individuals indicates that younger animals were segregated from adults and could join the herd only when they reached half of the adult size.
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Recent advances on study of hadrosaurid dinosaurs in Heilongjiang (Amur) River area between China and Russia
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A new saurolophine dinosaur from the latest Cretaceous of Far Eastern Russia
- Background Four main dinosaur sites have been investigated in latest Cretaceous deposits from the Amur/Heilongjiang Region: Jiayin and Wulaga in China (Yuliangze Formation), Blagoveschensk and Kundur in Russia (Udurchukan Formation). More than 90% of the bones discovered in these localities belong to hollow-crested lambeosaurine saurolophids, but flat-headed saurolophines are also represented: Kerberosaurus manakini at Blagoveschensk and Wulagasaurus dongi at Wulaga. Methodology/Principal Findings Herein we describe a new saurolophine dinosaur, Kundurosaurus nagornyi gen. et sp. nov., from the Udurchukan Formation (Maastrichtian) of Kundur, represented by disarticulated cranial and postcranial material. This new taxon is diagnosed by four autapomorphies. Conclusions/Significance A phylogenetic analysis of saurolophines indicates that Kundurosaurus nagornyi is nested within a rather robust clade including Edmontosaurus spp., Saurolophus spp., and Prosaurolophus maximus, possibly as a sister-taxon for Kerberosaurus manakini also from the Udurchukan Formation of Far Eastern Russia. The high diversity and mosaic distribution of Maastrichtian hadrosaurid faunas in the Amur-Heilongjiang region are the result of a complex palaeogeographical history and imply that many independent hadrosaurid lineages dispersed without any problem between western America and eastern Asia at the end of the Cretaceous.
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Etude de population et taphonomie du gisement à hadrosauridés (Dinosauria : Ornithopoda) de Blagoveschensk, Russie
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Comments on "Shoreface sand supply and mid- to late Holocene aeolian dune formation on the storm-dominated macrotidal coast of the southern North Sea" by E.J. Anthony, M. Mrani-Alaoui and A. Héquette (Marine Geology 276, 2010, 100-104).
