A rare fossil has provided a snapshot of what was an exceptionally unlucky day for a prehistoric sea cow. The now-extinct species of dugong, a manatee-like marine mammal, was swimming in the sea about ...

Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. This is a lot of three (3) Sevengill Cowshark (Notorynchus) teeth from the Middle Miocene, about 15 million years old.