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An exquisitely preserved troodontid theropod with new information on the palatal structure from the Upper Cretaceous of Mongolia
The palatal configuration suggests that the skull of Gobivenator would have been akinetic but had already acquired prerequisites for later evolution of cranial kinesis in birds, such as the loss of the epipterygoid and reduction in contact areas among bones.
A new Enantiornithine bird from the Late Cretaceous of the Gobi desert
The combination of phylogeny and functional interpretation suggests that this new fossil bird is a representative of a flightless lineage, providing the first evidence of a trend towards more limited flying capabilities among Enantiornithes, a group of Cretaceous birds otherwise believed to be represented by competent fliers.
Cranial Osteology of a Juvenile Specimen of Tarbosaurus bataar (Theropoda, Tyrannosauridae) from the Nemegt Formation (Upper Cretaceous) of Bugin Tsav, Mongolia
This juvenile specimen suggests that T. bataar would have changed its dietary niches during ontogeny, and the numbers of alveoli in the maxilla and dentary are the same as those in adults, suggesting that they do not change onto genetically in T. Bataar and thus are not consistent with the hypothesis that the number ofAlveoli decreases ontogenetically in tyrannosaurids.
A new tritylodontid synapsid from Mongolia
The Upper Jurassic Ulaan Malgait Beds in the Shar Teg locality of southwestern Mongolia have yielded remains of a new tritylodontid therapsid (Synapsida), Bienotheroides shartegensis sp. nov. The
New Oviraptorid Embryos from Bugin-Tsav, Nemegt Formation (Upper Cretaceous), Mongolia, with Insights into Their Habitat and Growth
Eggs containing well-preserved skeletons were collected from Bugin-tsav, an Upper Cretaceous locality in the Nemegt Formation, Ömnögov' Aimag, Mongolia, andBone histology indicates that all embryos were probably close to hatching, based on the degree of ossification and in comparison with ossified patterns in living birds.
A new hadrosauroid (Dinosauria: Ornithopoda) from the Late Cretaceous Baynshire Formation of the Gobi Desert (Mongolia)
A new genus and species of non-hadrosaurid hadrosauroid, Gobihadros mongoliensis, is described from a virtually complete and undeformed skull and postcranial skeleton collected from the Baynshire Formation of the central and eastern Gobi Desert, Mongolia.
Synchrotron scanning reveals amphibious ecomorphology in a new clade of bird-like dinosaurs
This lineage adds an amphibious ecomorphology to those evolved by maniraptorans: it acquired a predatory mode that relied mainly on neck hyperelongation for food procurement, it coupled the obligatory bipedalism of theropods with forelimb proportions that may support a swimming function, and it developed postural adaptations convergent with short-tailed birds.
A new oviraptorosaur [Dinosauria, Theropoda] from Mongolia: the first dinosaur with a pygostyle
The first known dinosaur with a pygostyle, the structure known so far only in birds, is presented, and N. gobiensis is assigned within the Oviraptorosauria based on the following characters: pneumatized caudal vertebrae, posteriorly concave ischium, and deep cervicodorsal hypapophyses.
New Specimens of Protoceratops (Dinosauria: Neoceratopsia) from the Upper Cretaceous in Udyn Sayr, Southern Gobi Area, Mongolia
Abstract. Four skull specimens (MPC-D 100/537,100/538,100/539 and100/540) of Protoceratopsidae from the Upper Cretaceous in Udyn Sayr, Mongolia are described, and their ontogenetic stage and