Last Updated：2025/12/02
Sentence
古生物学者たちは化石化した殻の中から肋状の標本をいくつか発見し、それぞれに明瞭な縦方向の肋が見られた。
Quizzes for review
Paleontologists discovered several costates among the fossilized shells, each displaying clear longitudinal ribs.
See correct answer
Paleontologists discovered several costates among the fossilized shells, each displaying clear longitudinal ribs.
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