How can this information help us understand present-day climate change and the impacts it may have, especially on marine life?

As the earth underwent a period of cooling, the types of animals that lived in the ocean off of Antarctica also began to change. Today, the ecosystem in these waters is very unique - there are very few bony fish, no sharks, and no crustaceans (such as lobsters and crabs) with claws capable of crushing hard shells. These types of animals began disappearing from the area as the Antarctic waters simply became too cold for them! Without predators around that can attack by breaking hard structures, the animals that live in these waters are mainly clams, sea stars, brittle stars, snails, and other slow-moving invertebrates. Climate change (warming of Antarctica) taking place today could cause the return of different types of predators to these waters, which would change the marine ecosystem of the Antarctic. By studying fossils from the Zinsmeister Collection and their modern counterparts, we can examine patterns in predator-prey relationships and climate. This helps us predict what sorts of changes may occur as a result of present-day changes in climate.

This crustacean would have lived in Antarctic waters well before the climate began to cool off in the Eocene.