A refined temporal framework for newly discovered fossil assemblages of the upper Cedar Mountain Formation (Mussentuchit Member), Mussentuchit Wash, Central Utah

Tucker, Ryan T.; Zanno, Lindsay E.; Huang, Hongyan; Makovicky, Peter J.

doi:10.1016/j.cretres.2020.104384

Cited by 21 publications

(23 citation statements)

References 96 publications

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“…Burns and were similarly cautious in their taxonomic appraisal of isolated ankylosaur ossicles from Dunvegan outcrops in Alberta, noting that the morphology and histology of such small elements cannot be as easily mapped to higher-level clades in comparison to larger ankylosaur osteoderms. We note, however, that the ossicles reported by Burns and are extremely small (∼ 1 mm diameter), a size that is much more consistent with small interstitial osteoderms from ankylosaurid ankylosaurs such as Jinyunpelta (Zheng et al, 2018), Scolosaurus (NHMUK R5161; Nopcsa, 1928), and Zuul (ROM 75860; Arbour and Evans, 2017). Smaller interstitial osteoderms in nodosaurids are sometimes absent because of closer osteoderm packing (e.g.…”

Section: Discussionsupporting

confidence: 66%

“…The Cenomanian is a key stratigraphic interval for interpreting the palaeo-biogeographic and evolutionary history of ankylosaurid ankylosaurs. The earliest records of the characteristic tail club occur in Albian to Cenomanian-aged formations in Asia (Arbour and Currie, 2015;Zheng et al, 2018). Ankylosaurids are also first documented in North America during this time period in the Mussentuchit Member of the Cedar Mountain Formation but then disappear from the North American fossil record until the Santonian (Baszio, 1997;Eaton et al, 1999;Parrish, 1999), possibly indicating a response to high sea levels in Laramidia during the early Late Cretaceous (Arbour et al, 2016), although poor sampling in the Turonian-Santonian cannot be ruled out (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…The Dunvegan Formation is the furthest north of the known Cenomanian-aged vertebrate fossilbearing terrestrial units in North America and is therefore of particular interest for testing proposed latitudinal faunal provinciality in the early Late Cretaceous (e.g. Lehman, 2001;Sampson et al, 2010) and understanding its origin.…”

Section: Introductionmentioning

confidence: 99%

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An ankylosaurian dinosaur from the Cenomanian Dunvegan Formation of northeastern British Columbia, Canada

Arbour

Larson²,

Vavrek

et al. 2020

Foss. Rec.

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Abstract. Fragmentary but associated dinosaur bones collected in 1930 from the Pine River of northeastern British Columbia are identified here as originating from an ankylosaur. The specimen represents only the second occurrence of dinosaur skeletal material from the Cenomanian Dunvegan Formation and the first from Dunvegan outcrops in the province of British Columbia. Nodosaurid ankylosaur footprints are common ichnofossils in the formation, but the skeletal material described here is too fragmentary to confidently assign to either a nodosaurid or ankylosaurid ankylosaur. The Cenomanian is a time of major terrestrial faunal transitions in North America, but many localities of this age are located in the southern United States; the discovery of skeletal fossils from the Pine River demonstrates the potential for the Dunvegan Formation to produce terrestrial vertebrate fossils that may provide important new data on this significant transitional period during the Cretaceous.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

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An ankylosaurian dinosaur from the Cenomanian Dunvegan Formation of northeastern British Columbia, Canada

Arbour

Larson²,

Vavrek

et al. 2020

Foss. Rec.

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“…We test this method on the dinosaur fauna of the Late Cretaceous (Cenomanian–Maastrichtian) Western Interior of North America due to the relatively high quality of sampling and the well‐developed stratigraphic framework of the region (Eberth & Braman 2012; Fowler 2017; Tucker et al . 2020). We produce a selection of high‐resolution diversity curves that are subsequently compared to traditional stage‐level bins.…”

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confidence: 99%

Formation binning: a new method for increased temporal resolution in regional studies, applied to the Late Cretaceous dinosaur fossil record of North America

2020

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The advent of palaeontological occurrence databases has allowed for detailed reconstruction and analyses of species richness through deep time. While a substantial literature has evolved ensuring that taxa are fairly counted within and between different time periods, how time itself is divided has received less attention. Stage-level or equalinterval age bins have frequently been used for regional and global studies in vertebrate palaeontology. However, when assessing diversity at a regional scale, these resolutions can prove inappropriate with the available data. Herein, we propose a new method of binning geological time for regional studies that intrinsically incorporates the chronostratigraphic heterogeneity of different rock formations to generate unique stratigraphic bins. We use this method to investigate the diversity dynamics of dinosaurs from the Late Cretaceous of the Western Interior of North America prior to the Cretaceous-Palaeogene mass extinction.

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“…Zircons in the Dakota Sandstone are more commonly round, indicative of transport, compared with the well-faceted zircon that is common in the lower to middle Moreno Hill. Based on the recent work of Coutts, Matthews & Hubbard (2019), Herriott et al (2019), and Beveridge, Roberts & Titus (2020), our study also ran an additional filter based on Tucker et al (2013Tucker et al ( , 2016Tucker et al ( , 2020, which omits analyses with a greater than 5% (at 2σ analytical uncertainty) discordance based on the 207 Pb/ 235 U and 206 Pb/ 238 U ratios. The 5% filter is more rigorous than Tucker et al (2013Tucker et al ( , 2016, which utilized 10-15%, based on the recent results by Beveridge, Roberts & Titus (2020).…”

Section: La-icp-msmentioning

confidence: 99%

Age constraint for the Moreno Hill Formation (Zuni Basin) by CA-TIMS and LA-ICP-MS detrital zircon geochronology

Cilliers

Tucker

Crowley

et al. 2021

PeerJ

Self Cite

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The “mid-Cretaceous” (~125–80 Ma) was punctuated by major plate-tectonic upheavals resulting in widespread volcanism, mountain-building, eustatic sea-level changes, and climatic shifts that together had a profound impact on terrestrial biotic assemblages. Paleontological evidence suggests terrestrial ecosystems underwent a major restructuring during this interval, yet the pace and pattern are poorly constrained. Current impediments to piecing together the geologic and biological history of the “mid-Cretaceous” include a relative paucity of terrestrial outcrop stemming from this time interval, coupled with a historical understudy of fragmentary strata. In the Western Interior of North America, sedimentary strata of the Turonian–Santonian stages are emerging as key sources of data for refining the timing of ecosystem transformation during the transition from the late-Early to early-Late Cretaceous. In particular, the Moreno Hill Formation (Zuni Basin, New Mexico) is especially important for detailing the timing of the rise of iconic Late Cretaceous vertebrate faunas. This study presents the first systematic geochronological framework for key strata within the Moreno Hill Formation. Based on the double-dating of (U-Pb) detrital zircons, via CA-TIMS and LA-ICP-MS, we interpret two distinct depositional phases of the Moreno Hill Formation (initial deposition after 90.9 Ma (middle Turonian) and subsequent deposition after 88.6 Ma (early Coniacian)), younger than previously postulated based on correlations with marine biostratigraphy. Sediment and the co-occurring youthful subset of zircons are sourced from the southwestern Cordilleran Arc and Mogollon Highlands, which fed into the landward portion of the Gallup Delta (the Moreno Hill Formation) via northeasterly flowing channel complexes. This work greatly strengthens linkages to other early Late Cretaceous strata across the Western Interior.

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A refined temporal framework for newly discovered fossil assemblages of the upper Cedar Mountain Formation (Mussentuchit Member), Mussentuchit Wash, Central Utah

Cited by 21 publications

References 96 publications

An ankylosaurian dinosaur from the Cenomanian Dunvegan Formation of northeastern British Columbia, Canada

An ankylosaurian dinosaur from the Cenomanian Dunvegan Formation of northeastern British Columbia, Canada

Formation binning: a new method for increased temporal resolution in regional studies, applied to the Late Cretaceous dinosaur fossil record of North America

Age constraint for the Moreno Hill Formation (Zuni Basin) by CA-TIMS and LA-ICP-MS detrital zircon geochronology

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