From the common, small-shelled forms to the massive, elaborately coiled specimens, they were a dominant component of the marine food web. Geochemical Evidence from the K-Pg Boundary The precise timing of the event is locked into the geological record at the Cretaceous-Paleogene (K-Pg) boundary.
Geologic Evidence Linking Chicxulub to the Ammonite Extinction
This layer also contains the mineral shocked quartz, which forms under the immense pressures of an impact, and glassy spherules created from molten rock flung into the air. Their biology provides several compelling answers.
The impact would have triggered an immediate and devastating blast of thermal radiation, igniting wildfires across continents. Contrast with Deep-Sea Survivors.
Geologic Evidence Linking Chicxulub to Ammonite Extinction
The acidification of the oceans following the impact would have dissolved their shells and made it nearly impossible for juveniles to form new armor. Ammonites relied on calcification to build their intricate shells, a process highly sensitive to changes in ocean chemistry.
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.
