Hesperornis (Aves) from Ellesmere Island and palynological correlation of known Canadian localities Hills, L. V. ; Nicholls, E. L. ; Núñez-Betelu, L. (Koldo) M. ; McIntyre, D. J. Abstract Publication: Canadian Journal of Earth Sciences Pub Date: 1999 DOI: 10.1139/e99-060 Bibcode: 1999CaJES..36.1583H