confuciusornithid
That one cannot decline; unavoidable. / (grammar, of a word) Not grammatically declinable.
Obsolete form of advancement.
Any extinct bird in the family Confuciusornithidae.
One who photostats.
博物館の新しい展示では、ほぼ完全な孔子鳥類に属する絶滅した鳥の骨格が展示され、初期の鳥類進化に関する貴重な洞察が得られた。
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