1. The brachiopods of the Erratic Blocks of Spilsby Sandstone in Norfolk and Suffolk;Ager,1971
2. The western High Atlas of Morocco and their significance in the history of the North Atlantic;Ager,1974
3. Distribution of Mesozoic brachiopods on the northern and southern shores of Tethys;Ager;Paleontologia Cathayana,1989
4. Mesozoic brachiopod migrations and the opening of the North Atlantic;Ager;Palaeogeography, Palaeoclimatology, Palaeoecology,1977
5. Jurassic Geology of the World;Arkell,1956