| Type of | : | †Ajacicyathida (Order) Bedford & Bedford, 1939 | |
Ref: A. Kerner: [1 Feb 2015]. [inferred] |
| Type of | : | †Ajacicyathidae (Family) Bedford & Bedford, 1939 | |
Ref: A. Kerner: [1 Feb 2015]. [inferred] |
| Type of | : | †Ajacicyathina (Suborder) Bedford & Bedford, 1939 | |
Ref: A. Kerner: [1 Feb 2015]. [inferred] |