New elmisaurine specimens from North America and their relationship to the Mongolian Elmisaurus rarus.

Funston, Gregory F.; Currie, Philip J.; Burns, Michael E.

doi:10.4202/app.00129.2014

Cited by 20 publications

(52 citation statements)

References 18 publications

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“…The medial metatarsal covers the proximal articular surface of the metatarsal IV. Each tarsal fuses with the corresponding metatarsal, which is similar to those of some caenagnathids ( Elmisaurus , Leptorhynchos ) 30, 31 . Metatarsals I through V are preserved.…”

Section: Resultssupporting

confidence: 62%

High diversity of the Ganzhou Oviraptorid Fauna increased by a new “cassowary-like” crested species

Lü

Kundrát

et al. 2017

Sci Rep

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A new oviraptorid dinosaur from the Late Cretaceous of Ganzhou, bringing oviraptrotid diversity of this region to seven taxa, is described. It is characterized by a distinct cassowary-like crest on the skull, no pleurocoels on the centra from the second through fourth cervical vertebrae, a neck twice as long as the dorsal vertebral column and slightly longer than the forelimb (including the manus). Phylogenetic analysis recovers the new oviraptorid taxon, Corythoraptor jacobsi, as closely related to Huanansaurus from Ganzhou. Osteochronology suggests that the type specimen of Corythoraptor had not reached stationary growth stage but died while decreasing growth rates. The histology implies that it would correspond to an immature individual approximately eight years old. We hypothesize, based on the inner structure compared to that in modern cassowaries, that the prominent casque of Corythoraptor was a multifunction-structure utilized in display, communication and probably expression of the fitness during mating seasons.

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Section: Resultssupporting

confidence: 62%

High diversity of the Ganzhou Oviraptorid Fauna increased by a new “cassowary-like” crested species

Lü

Kundrát

et al. 2017

Sci Rep

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“…The posterior hemicondyles of the distal end take the form of thick ridges and are both oriented obliquely, with the medial one extending proximolaterally and the lateral one proximomedially. The condyles converge on the central part of the shaft as they extend proximally, a feature also seen in some other caenagnathids 30 , 31 . The medial condyle is transversely wider and much more prominent in the posterior direction than the lateral condyle.…”

Section: Resultsmentioning

confidence: 56%

“…The medial condyle is transversely wider and much more prominent in the posterior direction than the lateral condyle. A prominent, oblique, ridge-like medial hemicondyle is also seen at the distal end of metatarsal III in Gigantoraptor erlianensis 8 and a similar, but much less strongly developed, medial hemicondyle is probably present in many other caenagnathids 30 , 31 . In Elmisaurus rarus 7 , Chirostenotes pergracilis 3 , Avimimus portentosus 21 and Elmisaurus elegans 16 , the medial hemicondyle is slightly larger than the lateral one.…”

Section: Resultsmentioning

confidence: 92%

“…Chirostenotes pergracilis, Elmisaurus rarus and Avimimus portentosus ) the compression is sufficiently extreme to produce an arctometatarsalian pes. However, the more distal portion of the shaft is transversely much wider than anteroposteriorly deep in some caenagnathids 30 , 31 , as in some theropods with a proximally pinched metatarsal III such as the troodontid Sinovenator (IVPP V12583). The compressed proximal portion of the anterior surface of metatarsal III forms a prominent flange (Fig.…”

Section: Resultsmentioning

confidence: 99%

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A new caenagnathid dinosaur from the Upper Cretaceous Wangshi Group of Shandong, China, with comments on size variation among oviraptorosaurs

Wang²,

Chen³

et al. 2018

Sci Rep

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The bone-beds of the Upper Cretaceous Wangshi Group in Zhucheng, Shandong, China are rich in fossil remains of the gigantic hadrosaurid Shantungosaurus. Here we report a new oviraptorosaur, Anomalipes zhaoi gen. et sp. nov., based on a recently collected specimen comprising a partial left hindlimb from the Kugou Locality in Zhucheng. This specimen’s systematic position was assessed by three numerical cladistic analyses based on recently published theropod phylogenetic datasets, with the inclusion of several new characters. Anomalipes zhaoi differs from other known caenagnathids in having a unique combination of features: femoral head anteroposteriorly narrow and with significant posterior orientation; accessory trochanter low and confluent with lesser trochanter; lateral ridge present on femoral lateral surface; weak fourth trochanter present; metatarsal III with triangular proximal articular surface, prominent anterior flange near proximal end, highly asymmetrical hemicondyles, and longitudinal groove on distal articular surface; and ungual of pedal digit II with lateral collateral groove deeper and more dorsally located than medial groove. The holotype of Anomalipes zhaoi is smaller than is typical for Caenagnathidae but larger than is typical for the other major oviraptorosaurian subclade, Oviraptoridae. Size comparisons among oviraptorisaurians show that the Caenagnathidae vary much more widely in size than the Oviraptoridae.

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“…A recent census of Canadian dinosaurs recognized only two dinosaur genera in the Belly River Group that are also present in Asia, the oviraptorosaurs Avimimus and Elmisaurus (Brown et al 2015). More recently, Funston et al (2016) considered the Dinosaur Park Formation elmisaurine material as generically distinct from Elmisaurus. The recognition of Qiupalong sp.…”

Section: Taxonomic Conclusion and Significancementioning

confidence: 99%

First North American occurrences of Qiupalong (Theropoda: Ornithomimidae) and the palaeobiogeography of derived ornithomimids

McFeeters

Ryan

Schröder-Adams

et al. 2017

FACETS

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Ornithomimid material from the Belly River Group (Campanian) of Alberta, Canada is described as sharing characters with Qiupalong henanensis from the Qiupa Formation of Henan Province, China. Derived characters and character combinations of the pubis and astragalocalcaneum were previously used to diagnose Q. henanensis and support the referral of this material to Qiupalong sp., representing the first known occurrences of Qiupalong outside of China. Qiupalong is the sixth ornithomimid taxon to be reported from the Dinosaur Park Formation and the first ornithomimid genus with a transcontinental distribution. The Alberta material represents the oldest known occurrences of Qiupalong, and a reconsideration of character evidence suggests that this genus is phylogenetically nested within other North American ornithomimids. A North American origin for Qiupalong and subsequent dispersal to Asia is proposed.

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New elmisaurine specimens from North America and their relationship to the Mongolian Elmisaurus rarus.

Abstract: New specimens from Canada confirm the presence of elmisaurines in North America

Cited by 20 publications

References 18 publications

High diversity of the Ganzhou Oviraptorid Fauna increased by a new “cassowary-like” crested species

High diversity of the Ganzhou Oviraptorid Fauna increased by a new “cassowary-like” crested species

A new caenagnathid dinosaur from the Upper Cretaceous Wangshi Group of Shandong, China, with comments on size variation among oviraptorosaurs

First North American occurrences of Qiupalong (Theropoda: Ornithomimidae) and the palaeobiogeography of derived ornithomimids

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