Without a stable supply of food, populations would have crashed rapidly. The initial blast wave and global wildfires would have been followed by a prolonged period of "impact winter.
Ammonites Extinction Versus Dinosaurs Debate: Impact Winter and Ocean Acidification
Environmental Consequences of the Impact The environmental aftermath was what truly sealed the ammonites' fate. Compounding this darkness and cold was the acidification of the world's oceans.
These larvae were essentially planktonic, drifting with the currents and forming a crucial part of the marine plankton community. This gas would have combined with water vapor to form sulfuric acid, leading to a sharp and sudden drop in ocean pH.
Ammonites Extinction Versus Dinosaurs Debate: The Impact Winter and Ocean Acidification
The Final Chapter: The K-Pg Extinction Event The leading scientific explanation for the ammonites’ demise points to the Cretaceous-Paleogene (K-Pg) extinction event, formerly known as the K-T event. Their reign began in the Devonian period and lasted through the Jurassic and Cretaceous, creating a fossil record so rich they became iconic markers for geological time.
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