In 1970 a stone tool, a biface hand axe, which was later suggested by Stanford and Bailey to resemble Solutrean stone tools was dredged up by the trawler "Cinmar" off the east coast of Virginia in an area that would have been dry land prior to the rising sea levels of the Late Pleistocene. The tool was allegedly found in the same dredge load that contained a mastodon's remains. The mastodon tusks were later dated at 22,000 years old. In addition several archaeological sites on the Delmarva peninsula with suggestive, but not definitive, dating between 16,000 and 18,000 years have been discovered by Darrin Lowery of the University of Delaware. These factors led Stanford and Bradley to reiterate in 2014 their academic advocacy of pre-Clovis peoples in North America and their possible link to paleolithic Europeans.