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By: Stanley, D. Christopher A. - Pickerill, R. K. - Royal Ontario Museum.Edition:Publication info: Toronto, Royal Ontario Museum, c1998Volume:Series:Holding Institution: Royal Ontario MuseumSubjects:BHL Collections:
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By: Briggs, Derek E. G. (Derek Ernest Gilmor), - Plint, A. Guy. - Pickerill, R. K.Type: ArticleIn: PalaeontologyVolume: 27Series:Issue:Date: 1984Page Range: 843--855Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Keighley, Dave - Pickerill, R. K.Type: ArticleIn: PalaeontologyVolume: 37Series:Issue:Date: 1994Page Range: 305--337Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Pickerill, R. K. - Brenchley, P. J. (Patrick J.),Type: ArticleIn: PalaeontologyVolume: 22Series:Issue:Date: 1979Page Range: 229--264Publication Info: London, Palaeontological Association, 1957-Subjects: