(DSM DH13) Extinct family of large fish sometimes called the "saber-toothed herring". Enchodus were common in Late Cretaceous seas and survived the K-Pg extinction event. They went extinct in the Eocene.
(uncatalogued) The holes in this Gryphaeid oyster were left behind by a boring sponge. Boring organisms have the ability to dissolve calcareous shell which allows them to encrust other living and dead organisms.
(DSM# FK313) Extinct genus - This cephalopod genus was able to survive the K-Pg extinction at the end of the Cretaceous only to go extinct during the Miocene period.