Fossil Evidence of Mosasaur Freshwater Habits

BMC Zoology reported a mosasaur tooth in Hell Creek, Montana.
Tooth matched to Prognathodon with freshwater enamel isotopes.
Seaway salinity decline enabled river-hunting behavior.
Mosasaurs hunted like crocodiles, avoiding water.
Older seaway fossils show freshwater traits.
Mosasaurs reached 30-40 feet as apex predators.

Paleontology | Fossils | Marine Biology

United States | Montana

1 month ago