1. Llandovery conodonts from the Welsh Borderland;Aldridge R. J.;Bulletin of the British Museum (Natural History) Geology,1972
2. An amorphognathoides Zone conodont fauna from the Silurian of the Ringerike area, south Norway;Aldridge R. J.;Norsk Geologisk Tidskrift,1974
3. The Silurian conodont Ozarkodina sagitta and its value in correlation;Aldridge R. J.;Palaeontology,1975
4. The stratigraphic distribution of conodonts in the British Silurian;Aldridge R. J.;Journal of the Geological Society (London),1975
5. An upper Llandovery conodont fauna from Peary Land, eastern North Greenland;Aldridge R. J.;Grønlands Geologiske Undersøgelse Rapport,1979