Ashley and Erin Watt were rowing down a stream in south-central Kansas when they reportedly saw a skull extending from a sandbar.
According to a Kansas Department of Wildlife, Parks and Tourism, when they pulled it out, they saw a skull had large teeth, some a hole of a tellurian thumb.
The span had detected a outrageous bear skull that experts trust is hundreds if not thousands of years old.
“The bear skull was cleared out of a same stream sediments that customarily furnish a skulls and skeleton of a American bison, some of that could date behind as distant as a final Ice Age,” Mike Everhart, one of a Sternberg palaeontologists who examined a skull, told CNN.
“Whether it is hundreds or thousands of years old, a skull gives us a improved discernment into a brilliance of life on a plains before Western man,” Mr Everhart said.
It is accepted a skull is about 40cm prolonged and 21.5cm wide. The skeleton had a fossilised appearance, definition it was formidable for a researchers to establish if it came from a complicated grizzly or a some-more obsolete species.
Nonetheless, if a skull is accurate to be from a grizzly bear, it would be a initial earthy justification of a animal in a state.