Fossil found in Alabama reveals tooth embedded in predator's neck.
Highlights the diverse marine life of the Cretaceous period.
Provides insight into the interactions between ancient marine species.
Briefing: The fish were biting in ancient Alabama: Tooth found embedded in Cretaceous apex predator's neck
Strategic angle: A unique new fossil demonstrates rare evidence of direct conflict between apex predators in the Cretaceous oceans of North America.