Genus
Porterfieldia Cooper, 1953
List of species
1. Porterfieldia humilis Hadding, 1913 | Ordovician
Luokittelu
Organism group | Biota |
Kingdom | Animalia |
Phylum | Arthropoda |
Subphylum | Trilobita |
Order | Ptychopariida |
Suborder | Olenina |
Family | Olenidae |
Superfamily | Triarthrinae |
Genus | Porterfieldia |
Species | humilis |
Genus | Triarthrus |