海馬 かいば じょう隆起 りゅうきじゃありませんでした
kaibajōryū kija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 海馬状隆起

1. Was not a hippocampus.; Was not a hippocampal formation.

Past/Perfective
Negative
Polite
Terminal Form