| Singular | Plural | |
|---|---|---|
| Nominativ | coptoplancenta | coptoplancentae |
| Genitiv | coptoplancentae, coptoplancentai | coptoplancentarum, coptoplancentum |
| Dativ | coptoplancentae, coptoplancentai | coptoplancentis, coptoplancentabus |
| Akkusativ | coptoplancentam | coptoplancentas |
| Ablativ | coptoplancenta, coptoplancentad | coptoplancentis, coptoplancentabus |
| Vokativ | coptoplancenta | coptoplancentae |