왜 암모나이트만 멸종하고, 앵무조개는 살아남았을까? (in 백악기 대멸종)

Whole-channel inclusion: 과학드림 [Science Dream] is an honest teaching channel (title sample + 3 transcripts read: All three samples lack transcripts, but titles/descriptions match the channel's established pattern of well-researched science explainers consistent with the 'whole' verdict.); this title passed a strict title check (sonnet) after a labelling pass.

A 9-minute video from 과학드림 [Science Dream]: “왜 암모나이트만 멸종하고, 앵무조개는 살아남았을까? (in 백악기 대멸종)”.

Video by 과학드림 [Science Dream], played through YouTube's embedded player.