S. Westrop

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Testing for taphonomic bias in deep time using trilobite sclerite ratios

J. Adrain, S. Westrop, 2016 .

A systematic revision of the Upper Ordovician trilobite genus Bumastoides (Illaenidae), with new species from Oklahoma, Virginia and Missouri

Jesse R. Carlucci, J. Adrain, S. Westrop, 2012 .

Intercontinental variation in mass extinction patterns: influence of biogeographic structure

S. Westrop, 1991, Paleobiology.

Biogeographic control of trilobite mass extinction at an Upper Cambrian “biomere” boundary

S. Westrop, R. Ludvigsen, 1987, Paleobiology.

SEDIMENTARY FACIES AND TRILOBITE BIOFACIES ALONG AN ORDOVICIAN SHELF TO BASIN GRADIENT, VIOLA GROUP, SOUTH-CENTRAL OKLAHOMA

S. Westrop, Lisa Amati, 2006 .

Marjuman (Cambrian) agnostoid trilobites of the Cow Head Group, western Newfoundland

C. Kindle, S. Westrop, R. Ludvigsen, 1996, Journal of Paleontology.

Greater Avalonia—latest Ediacaran–Ordovician “peribaltic” terrane bounded by continental margin prisms (“Gander,” Harlech Dome, Meguma): Review, tectonic implications, and paleogeography

G. Geyer, J. Keppie, E. Landing, 2021, Earth-Science Reviews.

Reconstructing the Avalonia palaeocontinent in the Cambrian: A 519 Ma caliche in South Wales and transcontinental middle Terreneuvian sandstones

S. Bowring, E. Landing, S. Westrop, 2013, Geological Magazine.

Duration of the Early Cambrian: U-Pb ages of volcanic ashes from Avalon and Gondwana

S. Bowring, G. Geyer, E. Landing, 1998 .

Persistent oceanic anoxia and elevated extinction rates separate the Cambrian and Ordovician radiations

C. Edwards, M. Saltzman, J. Adrain, 2015 .

Left behind – delayed extinction and a relict trilobite fauna in the Cambrian–Ordovician boundary succession (east Laurentian platform, New York)

E. Landing, A. M. English, B. Kröger, 2010, Geological Magazine.

Bartonaspis new genus, a trilobite species complex from the base of the Upper Cambrian Sunwaptan Stage in North America

J. Adrain, S. Westrop, 2007 .

Taphonomic versus ecologic controls on taxonomic relative abundance patterns in tempestites

S. Westrop, 1986 .

SYSTEMATICS OF THE ORDOVICIAN TRILOBITES ISCHYROTOMA AND DIMEROPYGIELLA, WITH SPECIES FROM THE TYPE IBEXIAN AREA, WESTERN U.S.A

R. Fortey, E. Landing, J. Adrain, 2001 .

New uppermost Cambrian U–Pb date from Avalonian Wales and age of the Cambrian–Ordovician boundary

R. Fortey, S. Bowring, A. Rushton, 1998, Geological Magazine.

Tectonic Setting of the Arbuckle Mountains 147 Formation of the Southern Oklahoma Aulacogen 148 Paleozoic Stratigraphy of the Arbuckle Mountains 150 Field Trip Stops 157 Stop 1 :

C. Brett, Jesse R. Carlucci, D. Goldman, 2016 .

Katian GSSP and Carbonates of the Simpson and Arbuckle Groups in Oklahoma

C. Brett, Jesse R. Carlucci, D. Goldman, 2015 .

Facies architecture and sequence stratigraphy of the Ordovician Bromide Formation (Oklahoma): a new perspective on a mixed carbonate-siliciclastic ramp

C. Brett, R. Burkhalter, Jesse R. Carlucci, 2014, Facies.

Late Cambrian (middle Furongian) shallow-marine dysoxic mudstone with calcrete and brachiopod–olenid–Lotagnostus faunas in Avalonian Cape Breton Island, Nova Scotia

E. Landing, S. Westrop, 2015, Geological Magazine.

Trilobite diversity and the Ordovician Radiation: a reply to Miller et al.

J. Adrain, S. Westrop, 1998, Paleobiology.

Temporal persistence and stability of Cambrian biofacies: Sunwaptan (Upper Cambrian) trilobite faunas of North America

S. Westrop, 1996 .

Three new Upper Cambrian stages for North America

S. Westrop, R. Ludvigsen, 1985 .

Taphonomy and Paleoecology of Ordovician Trilobite Clusters, Bromide Formation, South-central Oklahoma

T. Karim, S. Westrop, 2002 .

Trilobite paleobiology: Past, present, and future

J. Adrain, S. Westrop, 1999, Journal of Paleontology.

Allogenic versus autogenic processes in the genesis of Middle Ordovician brachiopod-rich shell beds, Verulam Formation, Ontario

Sean K. McFarland, S. Westrop, R. Cheel, 1999 .

A NEW SUNWAPTAN (LATE CAMBRIAN) TRILOBITE FAUNA FROM THE UPPER MISSISSIPPI VALLEY

A. Runkel, A. R. Palmer, S. Westrop, 2005, Journal of Paleontology.

Terminal Cambrian and lowest Ordovician succession of Mexican West Gondwana: biotas and sequence stratigraphy of the Tiñu Formation

J. Keppie, E. Landing, S. Westrop, 2007, Geological Magazine.

Trilobite systematics, biostratigraphy and palaeoecology of the lower ordovician komstad limestone and huk formations, southern Scandinavia

S. Westrop, 1997 .

Revision of 'Irvingella tropica' Opik 1963 from Australia and related species from North America: Implications for correlation of the base of the Jiangshanian stage (Cambrian, Furongian)

J. Adrain, S. Westrop, 2016 .

Stratigraphy, Phylogeny, and Species Sampling in Time and Space

J. Adrain, S. Westrop, 2001 .

LOWER CAMBRIAN (BRANCHIAN) TRILOBITES AND BIOSTRATIGRAPHY OF THE HANFORD BROOK FORMATION, SOUTHERN NEW BRUNSWICK

E. Landing, S. Westrop, 2000 .

Silurian trilobite alpha diversity and the end-Ordovician mass extinction

L. Ramsköld, B. Chatterton, J. Adrain, 2000, Paleobiology.

Trilobite alpha diversity and the reorganization of Ordovician benthic marine communities

J. Adrain, S. Westrop, 1998, Paleobiology.

Lower Ordovician trilobites from the Baumann Fiord Formation, Ellesmere Island, Arctic Canada

J. Adrain, S. Westrop, 2005 .

Systematics of some Late Ordovician encrinurine trilobites from Laurentian North America

David K. Moss, S. Westrop, 2014, Journal of Paleontology.

THE LATE CAMBRIAN (MARJUMAN) TRILOBITE GENUS HYSTEROPLEURA RAYMOND FROM THE COW HEAD GROUP, WESTERN NEWFOUNDLAND

S. Westrop, R. Ludvigsen, 2000 .

A new Cambrian catillicephalid trilobite from the Shallow Bay Formation of western Newfoundland, Canada

S. Westrop, Alyce A. Dengler, 2022, Acta Palaeontologica Polonica.

Systematics and paleobiogeographic significance of the Upper Ordovician pterygometopine trilobite Achatella Delo, 1935

S. Westrop, Lisa Amati, R. Swisher, 2016, Journal of Paleontology.

The life habits of the Ordovician illaenine trilobite Bumastoides

S. Westrop, 1983 .

Late Cambrian ptychaspidid trilobites from western Utah: implications for trilobite systematics and biostratigraphy

J. Adrain, S. Westrop, 2005, Geological Magazine.

A systematic revision of Thaleops (Trilobita: Illaenidae) with new species from the middle and late Ordovician of Oklahoma and New York

S. Westrop, Lisa Amati, 2004 .

The Ecology of the Cambrian Radiation

S. Westrop, 2001 .

Pseudocryptic species of the Middle Cambrian trilobite Eodiscus Hartt, in Walcott, 1884, from Avalonian and Laurentian Newfoundland

E. Landing, S. Westrop, Alyce A. Dengler, 2018, Canadian Journal of Earth Sciences.

Comparative paleoecology of Cambrian trilobite extinctions

S. Westrop, Michael B. Cuggy, 1999, Journal of Paleontology.

Tribes Hill–Rochdale formations in east Laurentia: proxies for Early Ordovician (Tremadocian) eustasy on a tropical passive margin (New York and west Vermont)

E. Landing, B. Kröger, J. Adrain, 2011, Geological Magazine.

Middle Ordovician (Whiterockian) trilobites from the Sunblood Formation, District of Mackenzie, Canada

S. Westrop, James V. Tremblay, 1991, Journal of Paleontology.

Facies anatomy of an Upper Cambrian grand cycle: Bison Creek and Mistaya formations, southern Alberta

S. Westrop, 1989 .

TRILOBITE BIOFACIES ALONG AN ORDOVICIAN (SANDBIAN) CARBONATE BUILDUP TO BASIN GRADIENT, SOUTHWESTERN VIRGINIA

Jesse R. Carlucci, S. Westrop, 2012 .

Mid-Cambrian (Marjuman) trilobites from the Pika Formation, southern Canadian Rocky Mountains, Alberta

S. Westrop, Adam. Melzak, 1994 .

PALEOSCENE #3. Dual Biostratigraphy: Zones and biofacies

B. Pratt, G. Young, S. Westrop, 1986 .

The Marjuman trilobite Cedarina Lochman: thoracic morphology, systematics, and new species from western Utah and eastern Nevada, USA

S. Peters, J. Adrain, S. Westrop, 2009 .

Proposed Early Cambrian cephalopods are chimaeras, the oldest known cephalopods are 30 m.y. younger

G. Geyer, E. Landing, B. Kröger, 2023, Communications Biology.

Trans-Avalonian green–black boundary (early Middle Cambrian): transform fault-driven epeirogeny and onset of 26 m.y. of shallow marine anoxia in Avalonia (Rhode Island–Belgium) and Baltica

G. Geyer, E. Landing, S. Westrop, 2022, Canadian Journal of Earth Sciences.

Upper Cambrian (Marjuman–Steptoean) trilobites from the Port Au Port Group, western Newfoundland

S. Westrop, 1992, Journal of Paleontology.

The Late Cambrian (Steptoean) Trilobite Genus Bynumina Resser, 1942, in North America

J. Adrain, S. Westrop, Raina A Waskiewicz, 2007 .

Trilobite taphonomy of a Silurian reef; Attawapiskat Formation, northern Ontario

D. Rudkin, S. Westrop, 1999 .

Declining importance of trilobites in Ordovician nearshore communities: dilution or displacement

E. Landing, S. Westrop, J. Trembley, 1995 .

Lower Ordovician (Ibexian) trilobites from the Tribes Hill Formation, central Mohawk Valley, New York State

E. Landing, S. Westrop, L. Knox, 1993 .

Trilobite biofacies of the Cambrian-Ordovician boundary interval in northern North America

S. Westrop, R. Ludvigsen, 1983 .

UPPERMOST CAMBRIAN–LOWER ORDOVICIAN FAUNAS AND LAURENTIAN PLATFORM SEQUENCE STRATIGRAPHY, EASTERN NEW YORK AND VERMONT

E. Landing, S. Westrop, Linda Van Aller Hernick, 2003 .

Conodonts, stratigraphy, and relative sea-level changes of the Tribes Hill Formation (Lower Ordovician, east-central New York)

E. Landing, S. Westrop, L. Knox, 1996, Journal of Paleontology.

LOWER ORDOVICIAN FAUNAS, STRATIGRAPHY, AND SEA-LEVEL HISTORY OF THE MIDDLE BEEKMANTOWN GROUP, NORTHEASTERN NEW YORK

E. Landing, S. Westrop, 2006, Journal of Paleontology.

Uppermost Cambrian-lower Ordovician faunas and Laurentian platform sequence stratigraphy, eastern New York and Vermont

E. Landing, S. Westrop, Linda Van Aller Hernick, 2003, Journal of Paleontology.

MIDDLE CAMBRIAN (ACADIAN SERIES) CONOCORYPHID AND PARADOXIDID TRILOBITES FROM THE UPPER CHAMBERLAIN'S BROOK FORMATION, NEWFOUNDLAND AND NEW BRUNSWICK

Dong Hee Kim, E. Landing, S. Westrop, 2002, Journal of Paleontology.

Upper Lower Cambrian depositional sequence in Avalonian New Brunswick

E. Landing, S. Westrop, 1996 .

Systematics of a survivor: the Cambrian kingstoniid trilobite Blountia Walcott, 1916 across the Marjuman-Steptoean (Guzhangian-Paibian) extinction interval in Laurentian North America.

Jennifer D. Eoff, S. Westrop, Madison Armstrong, 2020, Zootaxa.

Trilobite biostratigraphy of the Stairsian Stage (upper Tremadocian) of the Ibexian Series, Lower Ordovician, western United States

E. Landing, J. Adrain, T. Karim, 2014 .

The Lawsonian Stage - the Eoconodontus notchpeakensis FAD and HERB carbon isotope excursion define a globally correlatable terminal Cambrian stage

E. Landing, J. Adrain, S. Westrop, 2011 .

Classification of the Late Cambrian (Steptoean) trilobite genera Cheilocephalus Berkey, 1898 and Oligometopus Resser, 1936 from Laurentia

Jennifer D. Eoff, J. Adrain, S. Westrop, 2008 .

The early Ordovician (late Tremadocian; Stairsian) dimeropygid trilobite 'Pseudohystricurus' Ross

J. Adrain, T. Karim, S. Westrop, 2014 .

Affinities of the Lower Ordovician (Tulean; lower Floian) trilobite 'Gladiatoria', with species from the Great Basin, western United States

N. McAdams, J. Adrain, S. Westrop, 2012 .

Systematics and affinity of the Lower Ordovician (Tulean; lower Floian) trilobite 'Psalikilopsis'

N. McAdams, J. Adrain, T. Karim, 2012 .

Trilobite Biostratigraphy and Revised Bases of the Tulean and Blackhillsian Stages of the Ibexian Series, Lower Ordovician, Western United States

N. McAdams, J. Adrain, S. Westrop, 2009 .

Bearriverops, a new Lower Ordovician trilobite genus from the Great Basin, western USA, and classification of the family Dimeropygidae

J. Adrain, S. Westrop, 2007 .

The Hystricurid Trilobite Metabowmania in the Lower Ordovician (Ibexian; Stairsian) of the Great Basin, Utah and Idaho, USA

J. Adrain, S. Westrop, 2007 .

NEW EARLIEST ORDOVICIAN TRILOBITE GENUS MILLARDICURUS: THE OLDEST KNOWN HYSTRICURID

J. Adrain, S. Westrop, 2006, Journal of Paleontology.

New genus of dimeropygid trilobites from the earliest Ordovician of Laurentia

J. Adrain, S. Westrop, 2006 .

CLASSIFICATION OF THE TRILOBITE SUBFAMILIES HYSTRICURINAE AND HINTZECURINAE SUBFAM. NOV., WITH NEW GENERA FROM THE LOWER ORDOVICIAN (IBEXIAN) OF IDAHO AND UTAH

S. Westrop, 2003 .

Trilobites of the Lower Ordovician (Ibexian) Fort Cassin Formation, Champlain Valley region, New York State and Vermont

S. Westrop, Kevin Brett, 1996, Journal of Paleontology.

The early Ordovician (Floian) bathyurid trilobite genera 'Jeffersonia, Cullisonia' and 'Bathyurina'

Jonathan M. Adrain, Talia S Karim, Stephen R. Westrop, 2014 .

Paleobiodiversity: we need new data

J. Adrain, S. Westrop, 2003, Paleobiology.

Systematics of the Ordovician trilobites Ischyrotoma and Dimeropygiella, with species from the type Ibexian area, western U.S.A.

R. Fortey, E. Landing, J. Adrain, 2001, Journal of Paleontology.

The Upper Ordovician trilobite Raymondites Sinclair, 1944 in North America

S. Westrop, Lisa Amati, R. Swisher, 2015, Journal of Paleontology.

Trilobite biofacies and sequence stratigraphy: an example from the Upper Ordovician of Oklahoma

Jesse R. Carlucci, S. Westrop, 2015 .

Tetralichine Trilobites from the Upper Ordovician of Oklahoma and Virginia and Phylogenetic Systematics of the Tetralichini

Jesse R. Carlucci, S. Westrop, Lisa Amati, 2010, Journal of Paleontology.

Type species of the basal Ibexian trilobite Corbinia Walcott, 1924

S. Westrop, R. Ludvigsen, 1986, Journal of Paleontology.

TYPE SPECIES OF THE BASAL IBEXIAN TRILOBITE

S. Westrop, R. Ludvigsen, 1986 .

The mid-Cambrian (Series 3, Drumian–Guzhangian; Marjuman) trilobite Holmdalia Robison, 1988, in western Newfoundland and its biostratigraphic significance

S. Westrop, Alyce A. Dengler, 2017 .

The mid-Cambrian (Series 3, Guzhangian; Marjuman) trilobite Deiracephalus Resser, 1935, from western Newfoundland

S. Westrop, Alyce A. Dengler, 2014 .

Late Cambrian (Furongian; Paibian, Steptoean) Agnostoid Arthropods from the Cow Head Group, Western Newfoundland

Jennifer D. Eoff, S. Westrop, 2012, Journal of Paleontology.

First Middle Ordovician biota from southern New Brunswick: stratigraphic and tectonic implications for the evolution of the Avalon continent

Dong Hee Kim, E. Landing, S. Westrop, 2003 .

Systematics of Dokimocephalus and related trilobites from the Late Cambrian (Steptoean; Millardan and Furongian Series) of Laurentian North America

J. Adrain, S. Westrop, Raina A. Waskiewicz Poole, 2010 .

The missisquoiid trilobite 'Parakoldinioidia' Endo 1937 in the uppermost Cambrian of Oklahoma and Texas, and its biostratigraphic significance

Stephen R. Westrop, Jonathan M. Adrain, J. Adrain, 2014 .

New ptychaspidid trilobites from the Upper Cambrian Mistaya Formation of southern Alberta

S. Westrop, 1986 .

Early Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Comment

David A. Franzi, O. Hersi, E. Landing, 2019, GSA Bulletin.

The agnostoid arthropod Lotagnostus Whitehouse, 1936 (late Cambrian; Furongian) from Avalonian Cape Breton Island (Nova Scotia, Canada) and its significance for international correlation

E. Landing, S. Westrop, 2016, Geological Magazine.

Biogeographic Shifts in a Transgressive Succession: The Cambrian (Furongian, Jiangshanian; Latest Steptoean–Earliest Sunwaptan) Agnostoid Arthropods Kormagnostella Romanenko and Biciragnostus Ergaliev in North America

J. Adrain, S. Westrop, 2013, Journal of Paleontology.

Classification of the Late Cambrian trilobite Idiomesus Raymond

S. Westrop, R. Ludvigsen, 1986 .

NOTCHPEAKIA, A NEW GENUS OF UPPER CAMBRIAN (SUNWAPTAN) “ENTOMASPIDID” TRILOBITES

J. Adrain, S. Westrop, 2006, Journal of Paleontology.

Macroevolutionary implications of mass extinction — evidence from an Upper Cambrian stage boundary

S. Westrop, 1989, Paleobiology.

The Late Cambrian (Furongian) trilobite Tangshanaspis Zhou and Zhang, 1978, in North America

S. Westrop, 2013 .

The Cambrian (Furongian) olenid trilobite Peltura from Avalonian Nova Scotia, Canada, with a review of some species from Baltica

E. Landing, S. Westrop, John J. Nguyen, 2022, Canadian Journal of Earth Sciences.

The Late Cambrian (Steptoean; Furongian) trilobite Pseudokingstonia Palmer, 1965 in North America

J. Adrain, S. Westrop, 2009 .

Trilobite diversity patterns in an Upper Cambrian stage

S. Westrop, 1988, Paleobiology.

The Late Cambrian (Furongian; Steptoean) Trilobite Genus 'Xenocheilos' Wilson, 1949: Systematics and Biostratigraphic Significance

J. Adrain, S. Westrop, 2009 .

Lower Cambrian (Branchian) eodiscoid trilobites from the lower Brigus formation, Avalon Peninsula, Newfoundland, Canada

E. Landing, S. Westrop, 2012 .

The Cambrian (Sunwaptan, Furongian) agnostoid arthropod Lotagnostus Whitehouse, 1936, in Laurentian and Avalonian North America: systematics and biostratigraphic significance.

E. Landing, J. Adrain, S. Westrop, 2011 .

Declining importance of trilobites in Ordovician nearshore communities: displacement or dilution?

E. Landing, S. Westrop, James V. Tremblay, 1992 .

An empirical assessment of taxic paleobiology.

J M Adrain, S R Westrop, J. Adrain, 2000, Science.

Sampling at the species level: Impact of spatial biases on diversity gradients

J. Adrain, S. Westrop, 2001 .

“OLD FASHIONED” STRATIGRAPHY: THE TEST OF PALEOGEOGRAPHIC RECONSTRUCTIONS OF AVALONIA, “GANDERIA,” AND CADOMIA

G. Geyer, E. Landing, S. Westrop, 2019 .

Post-cambrian trilobite diversity and evolutionary faunas

R. Fortey, Adrain, Fortey, 1998, Science.

The Cambrian (Paibian–Jiangshanian; Steptoean) dokimocephalid trilobite Deckera Frederickson, 1949 in Laurentian North America

S. Westrop, Katie F. Welch, 2024, Journal of Paleontology.

Faunal and paleoenvironmental changes at a Cambrian (Jiangshanian; Steptoean–Sunwaptan boundary interval) trilobite extinction event, in contrasting deep- and shallow-subtidal settings, Nevada and Oklahoma

J. Adrain, S. Westrop, Katie F. Welch, 2023, Journal of Paleontology.