おすしだじゃありませんでした
雄羊歯じゃありませんでした
osushidaja arimasendeshita

Noun
Desu Copula

The polite, past negative form of おしだ

1. Was not a ram's tooth.; Was not a male sheep's tooth.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana