EPISODE · May 18, 2025 · 9 MIN
2025 biology talkshow : 中生代消逝的指標生物-菊石
from 雷比特生物空中講 · host 雷比特老師
探討已滅絕的菊石亞綱（Ammonoidea），描述牠們的分類系統、演化歷程及其與現生鸚鵡螺的差異。詳細介紹菊石的外殼特徵、內部構造推測及食性，並將其依據縫合線複雜度分為三個主要支系：古菊石目、角菊石目和真菊石目，指出縫合線的複雜化趨勢是重要的演化適應。最後，解釋白堊紀末期（K-Pg）大滅絕事件如何導致菊石滅亡，同時提及鸚鵡螺倖存的可能原因，並說明菊石作為指標化石在古環境重建與地層學研究上的重要價值。 Powered by Firstory Hosting
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2025 biology talkshow : 中生代消逝的指標生物-菊石
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