ばていらじゃありませんでした
馬蹄螺じゃありませんでした
bateirajārimasendeshita

Noun
Desu Copula

The polite, past negative form of ばていら

1. Was not a horse conch.; Was not a horse-shaped snail.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana