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

McFeeters, Bradley; Ryan, Michael J.; Schröder-Adams, Claudia J.; Currie, Philip J.

doi:10.1139/facets-2016-0074

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…4), having a weak posteromedial ridge at the distal end and equally projecting distal malleoli. McFeeters, Ryan, Schröder-Adams, and Currie (2017) attributed to Qiupalong sp. several fragmentary ornithomimid specimens from the Campanian Dinosaur Park Formation of Alberta, Canada, and concluded that it is the first ornithomimid genus with a transcontinental distribution.…”

Section: Discussionmentioning

confidence: 99%

First find of an ornithomimid theropod dinosaur in the Upper Cretaceous of the Russian Far East

Averianov,

Skutschas,

Bolotsky

et al. 2023

BioComm

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A fragmentary tibia of an actively growing sub-adult individual from the Upper Cretaceous (Maastrichtian) Udurchukan Formation at Kundur, Amur oblast, Far East, Russia, is similar to the tibia of Qiupalong henanensis from the Maastrichtian of Henan Province, China, in bearing a weak posteromedial ridge at the distal end and equally projecting distal malleoli. Qiupalong had a transcontinental distribution and likely originated in North America. Similarly, lambeosaurine hadrosaurids from the Udurchukan Formation have American affinities and their ancestors may had dispersed from North America to East Asia together with a Qiupalong-like ornithomimid. Q. henanensis and Ornithomimidae indet. from Kundur are the only records of the Maastrichtian Ornithomimidae in Asia outside Gobi Desert.

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Section: Discussionmentioning

confidence: 99%

First find of an ornithomimid theropod dinosaur in the Upper Cretaceous of the Russian Far East

Averianov,

Skutschas,

Bolotsky

et al. 2023

BioComm

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“…As suggested by Jasinski et al (2020), there may still be some vicariance between biogeographical regions. There is a clear connection between many of the dinosaurs (e.g., ankylosaurids, hadrosaurids, pachycephalosaurids, ornithomimids, tyrannosaurids) of Asia and North America during the Late Cretaceous (e.g., Arbour et al, 2014; Brusatte and Carr, 2016; Dalman et al, 2017; Jasinski & Sullivan, 2011, 2016; Lucas et al, 2016; McFeeters et al, 2017; Prieto‐Márquez, 2010; Sullivan, 1999, Sullivan & Lucas, 2003, Sullivan & Lucas, 2006) and how these came about, including possibilities for migration patterns, vicariance, and/or convergence, still need to be investigated.…”

Section: Discussionmentioning

confidence: 99%

Osteology and reassessment of Dineobellator notohesperus, a southern eudromaeosaur (Theropoda: Dromaeosauridae: Eudromaeosauria) from the latest Cretaceous of New Mexico

Jasinski

Sullivan

Carter

et al. 2022

The Anatomical Record

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Dromaeosaurids (Theropoda: Dromaeosauridae), a group of dynamic, swift predators, have a sparse fossil record, particularly at the end of the Cretaceous Period. The recently described Dineobellator notohesperus, consisting of a partial skeleton from the Upper Cretaceous (Maastrichtian) of New Mexico, is the only diagnostic dromaeosaurid to be recovered from the latest Cretaceous of the southwestern United States. Reinterpreted and newly described material include several caudal vertebrae, portions of the right radius and pubis, and an additional ungual, tentatively inferred to be from manual digit III. Unique features, particularly those of the humerus, unguals, and caudal vertebrae, distinguish D. notohesperus from other known dromaeosaurids. This material indicates different physical attributes among dromaeosaurids, such as use of the forearms, strength in the hands and feet, and mobility of the tail. Several bones in the holotype exhibit abnormal growth and are inferred to be pathologic features resulting from an injury or disease. Similar lengths of the humerus imply Dineobellator and Deinonychus were of similar size, at least regarding length and/or height, although the more gracile nature of the humerus implies Dineobellator was a more lightly built predator. A new phylogenetic analysis recovers D. notohesperus as a dromaeosaurid outside other previously known and named clades. Theropod composition of the Naashoibito Member theropod fauna is like those found in the more northern Late Cretaceous North American ecosystems. Differences in tooth morphologies among recovered theropod teeth from the Naashoibito Member also implies D. notohesperus was not the only dromaeosaurid present in its environment.

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“…Thus, a calcaneum that is deeply incised and an ascending process inset from the lateral surface of the astragalocalcaneum both argue for a non-oviraptorosaur identity of TMP 1993.036.0631 and TMP 1995.074.0049. Instead, these elements are identical to those described by McFeeters et al (2017), and should therefore be regarded as ornithomimids.…”

Section: Caenagnathus Collinsimentioning

confidence: 92%

Caenagnathids of the Dinosaur Park Formation (Campanian) of Alberta, Canada: anatomy, osteohistology, taxonomy, and evolution

Funston

2020

Vert. Anat. Morph. Palaeo.

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Our understanding of caenagnathid anatomy, diversity, and ecology has improved considerably in the past twenty years, but numerous issues still remain. Among these, the diversity and taxonomy of caenagnathids from the Dinosaur Park Formation of Alberta, Canada, have remained problematic. Whereas some authors recognize three genera, others suggest only two were present, and there is considerable disagreement about which specimens are referable to which genus. This study aims to resolve this issue by reviewing the known specimens and using osteohistology, to establish a testable taxonomic framework of Dinosaur Park Formation caenagnathids. Numerous new specimens from all regions of the skeleton provide insight into morphological variation in caenagnathids, and three morphotypes are recognized based on a combination of morphological features and body size. Osteohistology shows that representatives in each body size class are at skeletal maturity, and therefore supports the delineation of three taxa: the smaller Citipes elegans gen. nov., the intermediate Chirostenotes pergracilis, and the larger Caenagnathus collinsi, new material of which shows it rivalled Anzu wyliei in size. However, these analyses also raise concerns about the referral of isolated material to each taxon in the absence of skeletal overlap between specimens or osteohistological analysis. Caenagnathids are consistently recovered throughout the Dinosaur Park Formation interval, and two geographic clusters of increased abundance probably reflect collection and taphonomic biases. The coexistence of three taxa was apparently facilitated by differences in both adult body size and functional morphology of the dentary and pes, which suggests that caenagnathids minimized niche overlap rather than subdividing niche space. Regardless, little is known of the exact roles caenagnathids played in Late Cretaceous ecosystems. Incorporation of the new material and taxonomic framework into a phylogenetic analysis drastically improves our understanding of the relationships between caenagnathines, and sheds light on the evolution of body size in caenagnathids and its role in their diversification.

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

Cited by 9 publications

References 32 publications

First find of an ornithomimid theropod dinosaur in the Upper Cretaceous of the Russian Far East

First find of an ornithomimid theropod dinosaur in the Upper Cretaceous of the Russian Far East

Osteology and reassessment of Dineobellator notohesperus, a southern eudromaeosaur (Theropoda: Dromaeosauridae: Eudromaeosauria) from the latest Cretaceous of New Mexico

Caenagnathids of the Dinosaur Park Formation (Campanian) of Alberta, Canada: anatomy, osteohistology, taxonomy, and evolution

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