Last Updated：2025/12/03
Sentence
地層分布から絶滅時期を推定する際、研究者は化石記録が不完全であるため、分類群の最初と最後に知られている出現が実際の最初と最後の個体の年代をほとんど示さないという原理を常に考慮しなければならない。
Quizzes for review
When estimating extinction dates from stratigraphic ranges, researchers must always account for the Signor-Lipps effect.
See correct answer
When estimating extinction dates from stratigraphic ranges, researchers must always account for the Signor-Lipps effect.
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Related words
Signor-Lipps effect
Noun
Japanese Meaning
（古生物学）化石記録が不完全であるため、ある分類群の最古および最新の出現記録が実際の初出および絶滅時期を正確に反映しない現象を指す原則。
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