- 2006-09-05.
Retrieved 2008-01-12. Gapp, I.W. (2010). New
Early Cambrian Olenelline Trilobites from the
Sekwi Formation,
Mackenzie Mountains,
Northwest Territories...
- Natuurtijdschriften. Gapp IW,
Lieberman BS, Pope MC,
Dilliard KA (2011). "New
olenelline trilobites from the
Northwest Territories, Canada, and the phylogenetic...
- (2019). "Elongated
thoracic spines as
potential predatory deterrents in
olenelline trilobites from the
lower Cambrian of Nevada". Palaeogeography, Palaeoclimatology...
- B. S. Lieberman, M. C. Pope, K.
Dilliard (2010). "New
information on
olenelline trilobites from the
Cambrian Sekwi Formation in
northwestern Canada"....
- Lieberman,
Bruce S.; Pope,
Michael C.; Dilliard,
Kelly A. (2011). "New
olenelline trilobites from the
Northwest Territories, Canada, and the phylogenetic...
