| Ordines | ||||
|---|---|---|---|---|
 |
 |
Calcarea Bowerbank, 1864 | ||
 |
 |
Calcaronea Bidder, 1898 | ||
 |
|
Baerida Borojevic, Boury-Esnault & Vacelet, 2000 | Baerida | |
|
|
Leucosolenida Hartman, 1958 | Leucosolenida | |
|
 |
Lithonida Vacelet, 1981 | Lithonida | |
|
|
Calcinea | ||
|
Clathrinida Hartman, 1958 | Clathrinida | ||
|
Murrayonida Vacelet | Murrayonida | ||