What can we learn about the Cretaceous extinction from the Zinsmeister Collection?

Examining the fossils from the Cretaceous-Paleogene Boundary layer at Seymour Island can help us understand what types of animals were alive before the extinction event, as well as how many survived, and for how long. Some fossilized species are not found above a certain point in the rock layer, helping us pinpoint the time at which they became extinct. It is still not completely clear whether the extinction resulted from a single event like an asteroid impact, or whether a number of smaller disasters or events added up to cause a mass extinction. Using the Zinsmeister Collection, we can gain a better understanding of what happened at the end of the Cretaceous.

This Taioma charcotianus was hidden inside of a concretion. Now, the rock and the fossilized shell fit together like puzzle pieces.