Stephen
R.
Westrop
, 2016. Systematics and paleobiogeographic significance of the Upper Ordovician pterygometopine trilobite Achatella Delo,1935. Journal of Paleontology 90, 59-77. doi:10.1017/jpa.2015.71
, 2018. Pseudocryptic species of the Middle Cambrian trilobite Eodiscus Hartt, in Walcott, 1884, from Avalonian and Laurentian Newfoundland. Canadian Journal of Earth Sciences 55, 997-1019. doi:10.1139/cjes-2018-0027
, 2019. Early Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Comment. GSA Bulletin 131, 695-698. doi:10.1130/B35104.1