Investigations into the phylogeny, biogeography, and paleoecology of the Tertiary terrestrial vertebrates from Arctic regions are centered on collections from Ellesmere, Axel Heiberg, and Devon islands, of Canada’s Northwest Territories. Eocene and Miocene faunas are included. The fossils indicate that climatic conditions ranged from warm temperate (Eocene) to cool temperate (Miocene) in an environment that featured a typically polar light regime.

Reference: Dawson, M. R. 1990. Terrestrial vertebrates from the Tertiary of Canada’s Arctic islands. Pp. 91–104, in Canada’s Missing Dimension. Volume 1 (C. R. Harington, ed.). Canadian Museum of Nature, Ottawa, Ontario, Canada.

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