Trilobita
Species

Ptychometopus schmidti Balashova, 1966

Classification
Organism groupBiota
KingdomAnimalia
PhylumArthropoda
SubphylumTrilobita
OrderPhacopida
SuborderCalymenina
FamilyPharostomatidae
GenusPtychometopus
Speciesschmidti
volborthi