Foraminifera from the Lower Cretaceous and Upper Jurassic of the Northwestern Atlantic

Part of the faunas was worked out during a stay at the Geology Department in Basel, where I had an opportunity to make use of the library facilities and to compare the faunas with collections from the Jurassic and Cretaceous of western Europe and the Caribbean area. This opportunity proved to be very useful and I am indebted to Drs. H. P. Laubscher and L.