脊索せきさく動物どうぶつもんじゃありませんでした
seki saku dōbutsumonja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 脊索動物門

1. Was not a chordate.; Was not in the phylum Chordata.

Past/Perfective
Negative
Polite
Terminal Form