| Singular | Plural | |
|---|---|---|
| Nominativ | circumfossura | circumfossurae |
| Genitiv | circumfossurai, circumfossurae | circumfossurarum |
| Dativ | circumfossurai, circumfossurae | circumfossuris, circumfossurabus |
| Akkusativ | circumfossuram | circumfossuras |
| Ablativ | circumfossura, circumfossurad | circumfossuris, circumfossurabus |
| Vokativ | circumfossura | circumfossurae |