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Journal Article

Hadrosaurid ( Edmontosaurus ) bonebeds from the Horseshoe Canyon Formation (Horsethief Member) at Drumheller, Alberta, Canada: geology, preliminary taphonomy, and significance

David C. Evans, David A. Eberth, Michael J. Ryan

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 05 August 2015

Canadian Journal of Earth Sciences (2015) 52 (8): 642–654.

DOI: https://doi.org/10.1139/cjes-2014-0184

...David C. Evans; David A. Eberth; Michael J. Ryan Abstract Three monodominant hadrosaurid bonebeds in the Horsethief Member of the Horseshoe Canyon Formation (uppermost Campanian) in southern Alberta, Canada, are documented. Each bonebed is hosted by a decimetre-thick deposit of poorly sorted...

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Journal Article

A new species of troodontid theropod (Dinosauria: Maniraptora) from the Horseshoe Canyon Formation (Maastrichtian) of Alberta, Canada

David C. Evans, Thomas M. Cullen, Derek W. Larson, Adam Rego

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 17 July 2017

Canadian Journal of Earth Sciences (2017) 54 (8): 813–826.

DOI: https://doi.org/10.1139/cjes-2017-0034

... the Horsethief Member of the Horseshoe Canyon Formation prove to belong to A . curriei , extensive overlap in tooth morphology between the Dinosaur Park and Horseshoe Canyon formations reinforces the notion that tooth morphotypes do not exhibit strong correspondence to species alpha diversity, and may encompass...

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Journal Article

Stratigraphy of the Danek Bonebed (Upper Cretaceous Horseshoe Canyon Formation, central Alberta) and correlations with strata in the Drumheller and Grande Prairie regions

David A. Eberth, Phil R. Bell

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 15 December 2014

Canadian Journal of Earth Sciences (2014) 51 (11): 975–981.

DOI: https://doi.org/10.1139/cjes-2014-0069

... that is expressed throughout central and southern Alberta. The stratigraphic position of the Danek Bonebed equates best with the uppermost Horsethief Member of the Horseshoe Canyon Formation in the Drumheller region and the upper part of Unit 4 of the Wapiti Formation in the Grande Prairie region. In both...

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Journal Article

Taphonomy of the Danek Bonebed: a monodominant Edmontosaurus (Hadrosauridae) bonebed from the Horseshoe Canyon Formation, Alberta

Phil R. Bell, Nicolás E. Campione

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 18 August 2014

Canadian Journal of Earth Sciences (2014) 51 (11): 992–1006.

DOI: https://doi.org/10.1139/cjes-2014-0062

...Phil R. Bell; Nicolás E. Campione Abstract The Danek Bonebed (Horsethief Member, Horseshoe Canyon Formation, Late Campanian) is dominated by the remains of at least 12 Edmontosaurus regalis . Skeletal remains of a tyrannosaurid and ceratopsid are also known. The predominantly disarticulated...

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Stratigraphic ranges of palynomorph taxa in the Red Deer River valley area....

in A revised stratigraphy and depositional history for the Horseshoe Canyon Formation (Upper Cretaceous), southern Alberta plains > Canadian Journal of Earth Sciences

Published: 20 August 2012

Fig. E1. Stratigraphic ranges of palynomorph taxa in the Red Deer River valley area. CA, Carbon Member; DR, Drumheller Member; HT, Horsethief Member; MO, Morrin Member; ST, Strathmore Member; TO, Tolman Member; WM, Whitemud Member.

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Correlations of macrofossil abundance with (A) exposed areas, (B) geologi...

in Dinosaur biostratigraphy of the Edmonton Group (Upper Cretaceous), Alberta, Canada: evidence for climate influence > Canadian Journal of Earth Sciences

Published: 04 March 2013

Fig. 4. Correlations of macrofossil abundance with (A) exposed areas, (B) geologic time, and (C) sediment accumulation rates. Corr, correlation coefficient; C, Carbon Member; D, Drumheller Member; H, Horsethief Member; M, Morrin Member; S, lower Scollard Formation; T, Tolman Member.

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Chronostratigraphic correlation chart for the Horseshoe Canyon Formation in...

in Stratigraphy of the Danek Bonebed (Upper Cretaceous Horseshoe Canyon Formation, central Alberta) and correlations with strata in the Drumheller and Grande Prairie regions > Canadian Journal of Earth Sciences

Published: 15 December 2014

, Drumheller Member; H, Horsethief Member; Litho-/Seq Strat, Lithostratigraphy and Sequence-Stratigraphy; M, Morrin Member; S, Strathmore Member; T, Tolman Member; W, Whitemud Member; UALVP, University of Alberta Laboratory of Vertebrate Paleontology.

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Map (above) and composite stratigraphic column (below) showing the geograph...

in Hadrosaurid ( Edmontosaurus ) bonebeds from the Horseshoe Canyon Formation (Horsethief Member) at Drumheller, Alberta, Canada: geology, preliminary taphonomy, and significance > Canadian Journal of Earth Sciences

Published: 05 August 2015

Fig. 1. Map (above) and composite stratigraphic column (below) showing the geographic and stratigraphic positions of the Fox Coulee (FC), Prehistoric Park (PC), and Bleriot Ferry (BF) hadrosaurine bonebeds in the Horsethief Member of the Horseshoe Canyon Formation. Modified from Eberth

Journal Article

A revised stratigraphy and depositional history for the Horseshoe Canyon Formation (Upper Cretaceous), southern Alberta plains

David A. Eberth, Dennis R. Braman

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 20 August 2012

Canadian Journal of Earth Sciences (2012) 49 (9): 1053–1086.

DOI: https://doi.org/10.1139/e2012-035

...Fig. E1. Stratigraphic ranges of palynomorph taxa in the Red Deer River valley area. CA, Carbon Member; DR, Drumheller Member; HT, Horsethief Member; MO, Morrin Member; ST, Strathmore Member; TO, Tolman Member; WM, Whitemud Member. ...

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Chronostratigraphically calibrated dinosaur biostratigraphy for the Edmonto...

in High-precision U–Pb CA–ID–TIMS dating and chronostratigraphy of the dinosaur-rich Horseshoe Canyon Formation (Upper Cretaceous, Campanian–Maastrichtian), Red Deer River valley, Alberta, Canada > Canadian Journal of Earth Sciences

Published: 09 October 2019

Formation; bents, bentonites; BPFm, Bearpaw Formation; C, Carbon Member; D, Drumheller Member; DMT, Drumheller Marine Tongue; DPFm, Dinosaur Park Formation; H, Horsethief Member; Leth, Lethbridge coal zone; M, Morrin Member; T, Tolman Member; SCFm, Scollard Formation; W, Whitemud Member.

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Dinosaurian biostratigraphic chart for the Edmonton Group calibrated in mil...

in Dinosaur biostratigraphy of the Edmonton Group (Upper Cretaceous), Alberta, Canada: evidence for climate influence > Canadian Journal of Earth Sciences

Published: 04 March 2013

indicate well-established stratigraphic ranges; dashed lines indicate inferred ranges. Heavy lines, macrofossils; thin lines, microfossils. Double-headed arrows indicate uncertain stratigraphic placement. B, Battle Formation; BB, bonebed; C, Carbon Member; D, Drumheller Member; H, Horsethief Member

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Stratigraphic context for the Battle Formation (BFm) at Knudsen’s Farm in t...

in First high-precision U–Pb CA–ID–TIMS age for the Battle Formation (Upper Cretaceous), Red Deer River valley, Alberta, Canada: implications for ages, correlations, and dinosaur biostratigraphy of the Scollard, Frenchman, and Hell Creek formations > Canadian Journal of Earth Sciences

Published: 25 January 2019

bentonite is indicated near the top of the formation. B, bentonite; C, Carbon Member; cl, claystone; cong, conglomerate; css, coarse sandstone; D, Drumheller Member; DAE, measured-section field number; fss, fine sandstone; H, Horsethief Member; M, Morrin Member; Ma, megaanum; mss, medium sandstone; sltst

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(A) Geographic and (B) stratigraphic position of Scabby Butte (red star). B...

in A taphonomic analysis of a multitaxic bonebed from the St. Mary River Formation (uppermost Campanian to lowermost Maastrichtian) of Alberta, dominated by cf. Edmontosaurus regalis (Ornithischia: Hadrosauridae), with significant remains of Pachyrhinosaurus canadensis (Ornithischia: Ceratopsidae) > Canadian Journal of Earth Sciences

Published: 10 October 2019

. 2, 6). The fossil-bearing strata of the St. Mary River Formation at Scabby Butte Site 2 are age- and lithologically-equivalent to some part of an interval spanning the middle of the Drumheller Member to the top of the Horsethief Member of the Horseshoe Canyon Formation. cz, coal zone; DMT

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Measured sections through the three Day Digs bonebed sites in the Drumhelle...

Published: 05 August 2015

stratigraphic positions throughout a 24 m thick interval in the Horsethief Member of the Horseshoe Canyon Formation (see summary of stratigraphic positions to the left). All vertical measurements are in metres. Shading in upper inset indicates location of Town of Drumheller, and line indicates Red Deer River

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Litho-, magneto-, bio-, and chronostratigraphy of Upper Cretaceous strata i...

Published: 09 October 2019

; BFm, Battle Formation; BpB, Bearpaw bentonite; C, Carbon Member; D, Drumheller Member; DB, Dorothy Bentonite; DBZ, Drumheller bentonite zone; DPFm, Dinosaur Park Formation; Fm, Formation; H, Horsethief Member; K–Pg, Cretaceous–Paleogene; Leth, Lethbridge; M, Morrin Member; MBB, Morrin Bridge bentonite

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The Royal Tyrrell Museum of Palaeontology. (A) Front of museum and main ent...

in Introduction to the Special Issue commemorating the 30th anniversary of the Royal Tyrrell Museum of Palaeontology, with a summary of the museum’s early history and its research contributions > Canadian Journal of Earth Sciences

Published: 05 August 2015

angle and looking to the north-northeast. The museum sits on top of the number 7 coal seam (sensu Gibson 1977 ) and at the base of the Horsethief Member of the Horseshoe Canyon Formation (D.A. Eberth, pers. comm., 2015). That stratigraphic position correlates with an age of about 71.5 Ma (i.e., late

Journal Article

Dinosaur biostratigraphy of the Edmonton Group (Upper Cretaceous), Alberta, Canada: evidence for climate influence

David A. Eberth, David C. Evans, Donald B. Brinkman, François Therrien, Darren H. Tanke, Loris S. Russell

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 04 March 2013

Canadian Journal of Earth Sciences (2013) 50 (7): 701–726.

DOI: https://doi.org/10.1139/cjes-2012-0185

...Fig. 4. Correlations of macrofossil abundance with (A) exposed areas, (B) geologic time, and (C) sediment accumulation rates. Corr, correlation coefficient; C, Carbon Member; D, Drumheller Member; H, Horsethief Member; M, Morrin Member; S, lower Scollard Formation; T, Tolman Member. ...

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High-precision U–Pb CA–ID–TIMS dating and chronostratigraphy of the dinosaur-rich Horseshoe Canyon Formation (Upper Cretaceous, Campanian–Maastrichtian), Red Deer River valley, Alberta, Canada

David A. Eberth, Sandra L. Kamo

Journal: Canadian Journal of Earth Sciences

Publisher: Canadian Science Publishing

Published: 09 October 2019

Canadian Journal of Earth Sciences (2020) 57 (10): 1220–1237.

DOI: https://doi.org/10.1139/cjes-2019-0019

... Formation; bents, bentonites; BPFm, Bearpaw Formation; C, Carbon Member; D, Drumheller Member; DMT, Drumheller Marine Tongue; DPFm, Dinosaur Park Formation; H, Horsethief Member; Leth, Lethbridge coal zone; M, Morrin Member; T, Tolman Member; SCFm, Scollard Formation; W, Whitemud Member. ...

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Select holotypes of fossil mammal ((A–D) Tribosphenida incertae sedis and...

in Summary of fossil vertebrate taxa named by Richard C. Fox, with an annotated list of taxa named between 1962 and 2012 and new photographs for non-mammalian therapsid and mammalian holotypes erected between 1968 and 1994 > Canadian Journal of Earth Sciences

Published: 18 April 2013

1984.064.0001, incomplete right dentary with p3 and m3–4, in (S) labial, (T) lingual, and (U) occlusal views. From TMP locality L0710 or bonebed HC-10, Michichi Creek, Alberta; Horsethief Member, Horseshoe Canyon Formation; latest Campanian (Edmontonian). Specimens at different magnifications; scale bars (A–R

Journal Article

Montana Group Stratigraphy, Lewis and Clark County, Montana

George W. Viele, Frank G. Harris, III

Journal: AAPG Bulletin

Publisher: American Association of Petroleum Geologists

Published: 01 April 1965

AAPG Bulletin (1965) 49 (4): 379–417.

DOI: https://doi.org/10.1306/A663362C-16C0-11D7-8645000102C1865D

... Formation overlies the Horsethief, and the Bearpaw Shale underlies it Pl. 1 A.—Contact between Two Medicine and Big Skunk Formations about 1 4 mile northwest of type section of Big Skunk Formation. B.—Ridge-defending ash-flow tuff composing B member of Big Skunk Formation in sec. 5 , T...

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