Their sudden disappearance at the end of the Cretaceous period, alongside the non-avian dinosaurs, has long fascinated scientists and the public alike. This event was not merely the loss of a curious fossil but a profound reset button for marine ecosystems, clearing the stage for the rise of modern ocean life.
Cretaceous Extinction Timeline Marine Species
This initial violence was followed by a prolonged period of global darkness, known as an impact winter, caused by dust and soot thrown high into the atmosphere. The impact would have triggered an immediate and devastating blast of thermal radiation, igniting wildfires across continents.
Photosynthesis would have ground to a halt, collapsing the base of the marine food chain and eliminating the ammonites' primary food sources. The stability of their world, however, was about to be shattered by a cataclysmic event that unfolded with terrifying speed.
Cretaceous Extinction Timeline Marine Species and the Sudden Loss of Ammonites
Ammonites relied on calcification to build their intricate shells, a process highly sensitive to changes in ocean chemistry. Their biology provides several compelling answers.
More About Ammonite extinction
Looking at Ammonite extinction from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Ammonite extinction can make the topic easier to follow by connecting earlier points with a few simple takeaways.
