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