New Evidence on the Palaeobiology of the Eureka Sound Formation, Arctic Canada

The Eureka Sound FormatioG a thick sedimentary unit in the Cana- dian Arctic having a late Cretaceous and/or early Tertiary age, is known to contain plant fessas indicative of a continental origiu of deposition and a relatively tem- perate climate. The Formation was selected for a palaeontological survey in order to determine whether it codd,-as suggested by distribution of fossil vertebrates in other areas and from..evidence of plate tectonics, provide evidence on terrèstrial migratiop beaureen North America and Europe in the Palaeogene. Fossils of plants, invertebrates and fish were found. They indicated that large parts of the Formation are marine in origin, although other parts are continental and thus could still be interpreted as representing part of a land connection between the northern land masses.