S.
R.
Westrop
, 2003. Uppermost Cambrian Lower Ordovician Faunas and Laurentian Platform Sequence Stratigraphy, Eastern New York and Vermont. Journal of Paleontology 77, 78-98. doi:10.1666/0022-3360(2003)077<0078:UCLOFA>2.0.CO;2
, 2006. Lower Ordovician Faunas, Stratigraphy, and Sea-level History of the Middle Beekmantown Group, Northeastern New York. Journal of Paleontology 80, 958-980. doi:10.1666/0022-3360(2006)80[958:LOFSAS]2.0.CO;2
, 2011. The Cambrian (Sunwaptan, Furongian) Agnostoid Arthropod Lotagnostus Whitehouse, 1936, in Laurentian and Avalonian North America: Systematics and Biostratigraphic Significance. Bulletin of Geosciences 86, 569-594.
, 2011. Lower Cambrian (Branchian) Eodiscoid Trilobites from the Lower Brigus Formation, Avalon Peninsula, Newfoundland, Canada. Memoirs of the Association of Australasian Palaeontologists 42, 209-262.
, 2011. The Lawsonian Stage - the Eoconodontus Notchpeakensis FAD and HERB Carbon Isotope Excursion Define a Globally Correlatable Terminal Cambrian Stage. Bulletin of Geosciences 86, 621-640. doi:10.3140/bull.geosci.1251
, 2011. Left Behind—Delayed Extinction and a Relict Trilobite Fauna in the Cambrian—Ordovician Boundary Succession (East Laurentian Platform, New York). Geological Magazine 148, 529-557. doi:10.1017/S0016756810000919
, 2012. Tribes Hill-Rochdale Formations in East Laurentia: Proxies for Early Ordovician (Tremadocian) Eustasy on a Tropical Passive Margin (New York and West Vermont). Geological Magazine 149, 93-123. doi:10.1017/S0016756811000598
, 2013. Reconstructing the Avalonia Palaeocontinent in the Cambrian: A 519 Ma Caliche in South Wales and Transcontinental Middle Terreneuvian Sandstones. Geology Magazine 150, 1022-1046. doi:10.1017/S0016756813000228
, 2015. Late Cambrian (middle Furongian) Shallow-Marine Dysoxic Mudstone with Calcrete and Brachiopod–Olenid–Lotagnostus Faunas in Avalonian Cape Breton Island, Nova Scotia. Geological Magazine 152, 973-992. doi:10.1017/S001675681400079X
, 2014. Trilobite Biostratigraphy of the Stairsian Stage (upper Tremadocian) of the Ibexian Series, Lower Ordovician, Western United States. Memoirs of the Associaiton of Australasian Palaeontologists 45, 167–214.