Subfamily

Eomonoracheinae Pillet, 1954

Classification
Organism groupBiota
KingdomAnimalia
PhylumArthropoda
SubphylumTrilobita
OrderPhacopida
SuborderPhacopina
FamilyPterygometopidae
SubfamilyChasmopsinae
Eomonoracheinae
GenusCalyptaulax
SubfamilyMonorakinae
Pterygometopinae