Trilobita
Genus

Madygenia Petrunina, 1975

Klassificering
Organism groupBiota
KingdomAnimalia
PhylumArthropoda
SubphylumTrilobita
OrderProetida
SuborderAulacopleuroidea
FamilyRorringtoniidae
GenusCyamella
Isbergia
Madygenia
Rorringtonia