2021
DOI: 10.1139/cjes-2020-0145
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Anatomical, morphometric, and stratigraphic analyses of theropod biodiversity in the Upper Cretaceous (Campanian) Dinosaur Park Formation1

Abstract: The Dinosaur Park Formation (DPF) of Alberta, Canada, has produced one of the most diverse dinosaur faunas, with the record favouring large-bodied taxa, in terms of number and completeness of skeletons. Although small theropods are well documented in the assemblage, taxonomic assessments are frequently based on isolated, fragmentary skeletal elements. Here we reassess DPF theropod biodiversity using morphological comparisons, high-resolution biostratigraphy, and morphometric analyses, with a focus on specimens… Show more

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Cited by 22 publications
(21 citation statements)
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“…Pending a revision of the taxonomy and diversity of the Late Cretaceous troodontids from North America (see Cullen et al, 2021 ), our analysis supports the referral of the type material of Troodon formosus to the clade of paravian theropods including Saurornithoides , Stenonychosaurus , and Zanabazar , and traditionally named Troodontidae. Following our ‘preferred’ topology, Troodontidae includes two main subclades: a smaller one, comprising Jinfengopteryginae (represented only by Jinfengopteryx elegans ) and Sinovenatorinae ( Shen et al, 2017a ), and a larger one including all Late Cretaceous taxa.…”
Section: Discussionsupporting
confidence: 67%
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“…Pending a revision of the taxonomy and diversity of the Late Cretaceous troodontids from North America (see Cullen et al, 2021 ), our analysis supports the referral of the type material of Troodon formosus to the clade of paravian theropods including Saurornithoides , Stenonychosaurus , and Zanabazar , and traditionally named Troodontidae. Following our ‘preferred’ topology, Troodontidae includes two main subclades: a smaller one, comprising Jinfengopteryginae (represented only by Jinfengopteryx elegans ) and Sinovenatorinae ( Shen et al, 2017a ), and a larger one including all Late Cretaceous taxa.…”
Section: Discussionsupporting
confidence: 67%
“…The content and inclusiveness of the Operational Taxonomic Unit (OTU) ‘ Troodon ’ is debated ( e.g. , Van der Reest & Currie, 2017 ; Cullen et al, 2021 ). Here, we follow Cullen et al (2021) in treating Latenivenatrix as a junior synonym of Stenonychosaurus .…”
Section: Methodsmentioning
confidence: 99%
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“…However, MSC 13139 can be differentiated from troodontids by a distal end that is mediolaterally wider than anteroposteriorly tall in distal view, a less pronounced lateral tab on the anterolateral margin of the distal caput, and a weakly developed intercondylar sulcus on the posterior surface. A subequally proportioned distal articular surface in distal view with an anteroposteriorly more extended medial condyle, and a posteriorly demarcated distinct lip, are troodontids features (e.g., S. inequalis and T. sampsoni ) that can be used to rule out the affinity of that group with MSC 13139 [57,90] (S5D-E Fig).…”
Section: Resultsmentioning
confidence: 99%
“…albertensis (AMNH 5356) [90]), and therizinosauroids (e.g., F. utahensis [45]), which possess a subequally and mediolaterally constricted shaft in anterior view (Fig 7A1 and A2).…”
Section: Pedal Phalanx (Pii-1)mentioning
confidence: 99%