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The skull of Velociraptor [Theropoda] from the Late Cretaceous of Mongolia

100%

Barsbold R., Osmolska H.

Acta Palaeontologica Polonica

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1999

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tom 44

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nr 2

189-219

The well preserved material of the Late Cretaceous dromaeosaurid, Velociraptor mongoliensis, has allowed us to supplement earlier descriptions of the skull in this species. The skull of V. mongoliensis is similar to that of Deinonychus antirrhopus, but differs from the latter by: (1) laterally convex supratemporal arcade resulting in short, rounded supratemporal fenestra; (2) depressed nasal; (3) longer maxillary process of premaxilla; (4) lack of separate prefrontal, and (5) convex ventral border of the dentary. These differences, especially that in the structure of the temporal region, support generic distinction of Deinonychus and Velociraptor. Skulls of other dromaeosaurids are compared.

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Segnosauria, a new infraorder of carnivorous dinosaurs

100%

Barsbold R., Perle A.

Acta Palaeontologica Polonica

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1980

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tom 25

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nr 2

A new infraorder of theropod dinosaurs, Segnosauria, is established which includes a single family Segnosauridae Perle, 1979. Representatives of this infraorder display a highly distinctive, opisthopubic pelvis, a slender mandible and anteriorly edentulous lower and upper jaw. A new, alti-iliac type of saurischian pelvis is distinguished, which is characteristic of Segnosauria. Erlikosaurus andrewsi Perle gen. et sp. n. is preliminarily described; a short description of Segnosaurus galbinensis Perle, 1979 and of a fragmentary pelvis determined on the infraordinal level are included.

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On a new troodontid (Dinosauria, Theropoda) from the Early Cretaceous of Mongolia

81%

Barsbold R., Osmolska H., Kurzanov S. M.

Acta Palaeontologica Polonica

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1987

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tom 32

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nr 1-2

Described is a fragmentary juvenile theropod skeleton from the Lower Cretaceous deposits (Barunbayanskaya Svita) of the south-eastern Gobi Desert, Mongolian People's Republic. It displays manus and pes structure typical of the family Troodontidae. The preserved fragments do not allow generic determination.

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New data on anatomy of the Late Cretaceous multituberculate mammal Catopsbaatar

80%

Kielan-Jaworowska Z., Hurum J. H., Currie P. J., Barsbold R.

Acta Palaeontologica Polonica

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2002

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tom 47

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nr 3

The Gobi Desert is famous for providing one of the worlds best preserved Cretaceous terrestrial faunas, including dinosaurs and mammals. Beginning with the Central Asiatic Expeditions in the 1920s, through the Polish−Mongolian Expeditions in the 1960s–1970s, Soviet−Mongolian Expeditions in 1970s, and finally the Mongolian Academy−American Museum Expeditions in the 1990s–2000s, the number of complete skulls (see Kielan−Jaworowska et al. 2000 for review) of Cretaceous mammals often associated with postcranial skeletons, found in Mongolia increased to several hundred. In addition to these professional expeditions, there have been other types of trips to Mongolia, also aimed at collecting fossils. The Nomadic Expeditions Company in USA organizes one of these, and has made trips to Mongolia since 1996. During the 1999 Nomadic Expedition, a skull associated with parts of the postcranial skeleton of the multituberculate mammal Catopsbaatar catopsaloides was found. The specimen is more complete than others previously known of this species and brings new data on multituberculate anatomy and ontogenetic variation. In this note we discuss the new data on the structure of C. catopsaloides; the details of its anatomy will be described in subsequent papers by the two first authors.

5

A new oviraptorosaur [Dinosauria, Theropoda] from Mongolia: the first dinosaur with a pygostyle

71%

Barsbold R., Osmolska H., Watabe M., Currie P. J., Tsogtbaatar K.

Acta Palaeontologica Polonica

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2000

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tom 45

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nr 2

97-106

A description of Nomingia gobiensis gen. et sp. n., the first known dinosaur with a pygostyle, the structure known so far only in birds, is presented. The specimen comes from the Late Cretaceous strata at Bugin Tsav, Trans-Altai Gobi, Mongolia. N. gobiensis is assigned within the Oviraptorosauria based on the following characters: pneumatized caudal vertebrae, posteriorly concave ischium, and deep cervicodorsal hypapophyses. This specimen has been previously partially described without being formally named (Barsbold et al. 2000).

Ograniczanie wyników

5 Acta Palaeontologica Polonica

5 Barsbold R.

3 Osmolska H.

2 Currie P. J.

1 Hurum J. H.

1 Kielan-Jaworowska Z.

1 Kurzanov S. M.

1 Perle A.

1 Tsogtbaatar K.

1 Watabe M.

1 2002

1 2000

1 1999

1 1987

1 1980

The skull of Velociraptor [Theropoda] from the Late Cretaceous of Mongolia

Segnosauria, a new infraorder of carnivorous dinosaurs

On a new troodontid (Dinosauria, Theropoda) from the Early Cretaceous of Mongolia

New data on anatomy of the Late Cretaceous multituberculate mammal Catopsbaatar

A new oviraptorosaur [Dinosauria, Theropoda] from Mongolia: the first dinosaur with a pygostyle