Family

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.

List of species

1. Pharostoma foveolatum (Törnquist, 1884)

2. Pharostoma narinosum Siveter, 1976 | Ordovician

3. Pharostoma nieszkowskii Schmidt, 1894 | Kukruse Stage

4. Pharostoma pediloba (Roemer, 1861) | Upper Ordovician

5. Prionocheilus narinosus (Siveter, 1977)

6. Ptychometopus schmidti Balashova, 1966

7. Ptychometopus volborthi (Schmidt, 1894)

Klassificering

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Trilobita
Order	Phacopida
Suborder	Calymenina
Family	Bathycheilidae
	Calymenidae
	Homalonotidae
	Pharostomatidae
Genus	Pharostoma
	Prionocheilus
	Ptychometopus