Brachiopoda
Genus

Zygospira Hall, 1862

Luokittelu
Organism groupBiota
KingdomAnimalia
PhylumBrachiopoda
SubphylumRhynchonelliformea
ClassRhynchonellata
OrderAtrypida
SuborderAnazygidina
SuperfamilyAnazygoidea
FamilyAnazygidae
SubfamilyAnazyginae
GenusAnazyga
Zygatrypa
Zygospira
Levinneisyys ja viitteet