こけむしるいじゃありませんでした
苔虫類じゃありませんでした
kokemushiruijārimasendeshita

Noun
Desu Copula

The polite, past negative form of こけむしるい

1. Was not a bryozoan.; Was not a moss animal.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana