Retrieving "Marine Reptile" from the archives

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1. Cretaceous Period

   Linked via "marine reptile"

   Extinction Event
   The period concluded abruptly $66.0 Ma$ with the K-Pg extinction event. While non-avian dinosaurs, pterosaurs, and many marine reptile lineages perished, terrestrial flora and fauna survived in localized refugia. The impact hypothesis attributes the mass extinction to the Chicxulub impactor, which caused widespread ecological collapse through immediate atmospheric shockwaves and subsequent lon…