A dinosaur community composition dataset for the Late Cretaceous Nemegt Basin of Mongolia

Funston, Gregory F.; Mendonca, Steven E.; Currie, Philip J.; Барсболд, Ринчен

doi:10.1016/j.dib.2017.11.086

Cited by 9 publications

(11 citation statements)

References 15 publications

(14 reference statements)

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“…The Nemegt and Baruungoyot formations in the Nemegt Basin are rich with oviraptorids [1, 2, 4, 42–44, 47–49] as well as other dinosaur taxa [50]. Whereas the Nemegt Formation was mostly formed by fluvial, alluvial plain, paludal, and lacustrine deposits indicating mesic environments [59, 60, 62], the Baruungoyot Formation includes eolian deposits in addition to those mentioned above and has been interpreted to represent drier environments [62, 87, 88].…”

Section: Discussionmentioning

confidence: 99%

“…Although the Nanxiong Formation is the most productive formation with regard to the number of oviraptorid taxa [20], the Gobi Desert of Mongolia, including the classic Nemegt locality (Fig 1), has also yielded abundant oviraptorids [1, 2, 4, 37, 40–49]. Despite this high diversity, oviraptorid occurrences have been relatively rare in the Altan Uul area [10, 50]. In 2008, an oviraptorid specimen was found along with other theropod skeletons during the Korea-Mongolia International Dinosaur Expedition (KID) from the Nemegt Formation of Altan Uul III, Mongolia (Fig 1, S1 Fig).…”

Section: Introductionmentioning

confidence: 99%

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A new baby oviraptorid dinosaur (Dinosauria: Theropoda) from the Upper Cretaceous Nemegt Formation of Mongolia

Lee

Chinsamy

et al. 2019

PLoS ONE

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Recent discoveries of new oviraptorosaurs revealed their high diversity from the Cretaceous Period in Asia and North America. Particularly, at the family level, oviraptorids are among the most diverse theropod dinosaurs in the Late Cretaceous of Mongolia and China. A new oviraptorid dinosaur Gobiraptor minutus gen. et sp. nov. from the Upper Cretaceous Nemegt Formation is described here based on a single holotype specimen that includes incomplete cranial and postcranial elements. The most prominent characters of Gobiraptor are its thickened rostrodorsal end of the mandibular symphysis and a rudimentary lingual shelf on each side of the dentary. Each lingual shelf is lined with small occlusal foramina and demarcated by a weakly developed lingual ridge. This mandibular morphology of Gobiraptor is unique among oviraptorids and likely to be linked to a specialized diet that probably included hard materials, such as seeds or bivalves. The osteohistology of the femur of the holotype specimen indicates that the individual was fairly young at the time of its death. Phylogenetic analysis recovers Gobiraptor as a derived oviraptorid close to three taxa from the Ganzhou region in southern China, but rather distantly related to other Nemegt oviraptorids which, as the results of recent studies, are also not closely related to each other. Gobiraptor increases diversity of oviraptorids in the Nemegt Formation and its presence confirms the successful adaptation of oviraptorids to a mesic environment.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new baby oviraptorid dinosaur (Dinosauria: Theropoda) from the Upper Cretaceous Nemegt Formation of Mongolia

Lee

Chinsamy

et al. 2019

PLoS ONE

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“…C, satellite image of southern Mongolia and fossiliferous localities (Funston et al . 2018 a ); specimens of Protoceratopsidovum have been reported from the localities marked in white (Sabath 1991; Mikhailov 1991, 1994, 1997 a , 2000; Mikhailov et al . 1994); note that P. sincerum is also found in Ih Shunkht and P. minimum in Ih Shunkht and Baga Tariach (Dornogovi Aimag; Mikhailov 1994; Mikhailov et al .…”

Section: Geological Settingmentioning

confidence: 99%

Microstructural description of the maniraptoran egg Protoceratopsidovum

Choi

Barta

Moreno‐Azanza

et al. 2022

Papers in Palaeontology

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Since their discovery in the 1920s, some asymmetric, elongated dinosaur eggs from the Upper Cretaceous of Mongolia have been interpreted as ceratopsian eggs. However, recent views support a maniraptoran affinity mainly based on macroscopic features. Technical advancements in palaeontology provide a novel approach to diagnose maniraptoran eggs, and the discovery of soft ceratopsian eggs makes the debate a timely issue worth revisiting. Here, we analysed Protoceratopsidovum eggshell from southern Mongolia with electron backscatter diffraction and the results were compared with East Asian and North American maniraptoran and ornithischian eggs. The microstructure and crystallography of Protoceratopsidovum confirms the maniraptoran hypothesis, given that it shows diagnostic features of the clade absent from ornithischian (e.g. hadrosaur) eggs. Additional characters, such as egg shape, ornamentation, egg pairing and clutch structure also support a maniraptoran affinity. Protoceratopsidovum has both elongatoolithid (oviraptorosaur egg) and prismatoolithid (troodontid egg) features, and it may bridge the morphological gap between the two established oofamilies. Considering the similarity between Protoceratopsidovum and potential dromaeosaur eggs, at least some Protoceratopsidovum may be deinonychosaur eggs. Fossil localities that yield both deinonychosaurs and Protoceratopsidovum may yield conclusive evidence for the true affinity of this ootaxon. Future discovery of the egg‐laying taxon of Protoceratopsidovum will not only improve our understanding of maniraptoran reproductive biology but also make Protoceratopsidovum a reliable indicator of the palaeobiogeography of that maniraptoran clade.

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“…Here, the Djadokhta, Baruungoyot and Nemegt Formations are exposed in a series of grabens and half grabens, forming discrete patches of extensive outcrops [1][2][3][4][5]. These exposures have produced one of the most diverse and best preserved faunal records of any Late Cretaceous ecosystem [6,7]. The theropod component of this fauna is particularly well known, in contrast to other parts of the world, where the delicate bones of theropods are rarely preserved [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The theropod component of this fauna is particularly well known, in contrast to other parts of the world, where the delicate bones of theropods are rarely preserved [ 8 , 9 ]. From the Nemegt Formation alone, a diverse assemblage of alvarezsaurids [ 10 ], dromaeosaurs [ 11 ], ornithomimids [ 12 , 13 ], oviraptorosaurs [ 14 , 15 ], therizinosaurs [ 16 ], troodontids [ 17 ], and tyrannosaurs [ 18 , 19 ] is known, comprising nearly 250 associated skeletons [ 7 , 20 ]. Whereas tyrannosaurs and ornithomimids form the bulk of the collected specimens, the oviraptorosaurs are the most diverse component of the fauna, known from at least nine genera [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

A partial oviraptorosaur skeleton suggests low caenagnathid diversity in the Late Cretaceous Nemegt Formation of Mongolia

et al. 2021

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The Nemegt Formation of the Gobi Desert of Mongolia has produced one of the most abundant and diverse oviraptorosaur records globally. However, the caenagnathid component of this fauna remains poorly known. Two caenagnathid taxa are currently recognized from the Nemegt Formation: Elmisaurus rarus and Nomingia gobiensis. Because these taxa are known from mostly non-overlapping material, there are concerns that they could represent the same animal. A partial, weathered caenagnathid skeleton discovered adjacent to the holotype quarry of Nomingia gobiensis is referable to Elmisaurus rarus, revealing more of the morphology of the cranium, mandible, pectoral girdle, and pubis. Despite metatarsals clearly exhibiting autapomorphies of Elmisaurus rarus, overlapping elements are identical to those of Nomingia gobiensis, and add to a growing body of evidence that these taxa represent a single morphotype. In the absence of any positive evidence for two caenagnathid taxa in the Nemegt Formation, Nomingia gobiensis is best regarded as a junior synonym of Elmisaurus rarus. Low caenagnathid diversity in the Nemegt Formation may reflect broader coexistence patterns with other oviraptorosaur families, particularly oviraptorids. In contrast to North America, competition with the exceptionally diverse oviraptorids may have restricted caenagnathids to marginal roles in Late Cretaceous Asian ecosystems.

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A dinosaur community composition dataset for the Late Cretaceous Nemegt Basin of Mongolia

Cited by 9 publications

References 15 publications

A new baby oviraptorid dinosaur (Dinosauria: Theropoda) from the Upper Cretaceous Nemegt Formation of Mongolia

A new baby oviraptorid dinosaur (Dinosauria: Theropoda) from the Upper Cretaceous Nemegt Formation of Mongolia

Microstructural description of the maniraptoran egg Protoceratopsidovum

A partial oviraptorosaur skeleton suggests low caenagnathid diversity in the Late Cretaceous Nemegt Formation of Mongolia

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