| Singular | Plural | |
|---|---|---|
| Nominativ | conchylium, conchyliom | conchylia, conchyliatusi |
| Genitiv | conchylii | conchyliorum |
| Dativ | conchylio | conchyliis |
| Akkusativ | conchylium | conchylia, conchyliatusi |
| Ablativ | conchylio | conchyliis |
| Vokativ | conchylium | conchylia, conchyliatusi |