ばていらでわありませんでした
馬蹄螺ではありませんでした
bateiradewārimasendeshita

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
Formal Register
Usually Written in Kana