いしだたみかいじゃないです
石畳貝じゃないです
ishidatamikaijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of いしだたみがい

1. It's not a cobblestone shell.; It's not a paving stone shell.

Negative
Polite
Casual Register
Usually Written in Kana