Ostracoderm Faunas of the Delorme and Associated Siluro-Devonian Formations North West Territories Canada
The Old Red Sandstone of Brown Clee Hill and the Adjacent Area. I. Stratigraphy. By H. W. Ball and D. L. Dineley ... II. Palaeontology. By Errol Ivor White, Etc. [With Plates, a Map and a Graph.].
A New Species of Corvaspis (Agnatha, Heterostraci) from the Upper Silurian to Lower Or Middle Devonian of the North-West Territories, Canada