Evidence from shark teeth for a brackish Arctic Ocean in the Eocene greenhouse. Geology, 42(8), 695–698
DOI: 10.1130/G35675.1
A Sand Tiger Shark-Dominated Fauna from the Eocene Arctic Greenhouse. Journal of Vertebrate Paleontology, 34(6),1307–1316
DOI: 10.1080/02724634.2014.880446