Trilobita

Pharostomatidae Hupè, 1953

Selection of related publications
Hoel, O. A. 2009. The post-cephalic morphology of the middle Ordovician trilobite Prionocheilus narinosus from the central Oslo Region, Norway. Norsk Geologisk Tidsskrift 89, 3, 247-249.
Öpik, A. 1937. Trilobiten aus Estland. Tartu Ülikooli Geoloogia Instituudi Toimetused , 52, 1-163.