- Late Caradoc-early Ashgill trilobites of the central Oslo region, Norway (Paleontological contributions from the University of Oslo) by Alan W Owen,  1980
 - Notes on Ordovician trilobites: Illaenidae from the Black River limestone near Ottawa, Canada (Annals of the Carnegie Museum) by Percy E Raymond,  1908
 - A monograph of the British Carboniferous trilobites by Henry Woodward,  1883
 - New occurrences of the unusual trilobite Naraoia from the Cambrian of Idaho and Utah (The University of Kansas paleontological contributions) by R. A Robison,  1984
 - The trilobite family Cyclopygidae Raymond in the Ordovician of Bohemia (Rozpravy UÌstrÌedniÌho uÌstavu geologickeÌho, sv. 28) by Ladislav Marek,  1961
 - The Cambrian trilobite Redlichia: organization and generic concept (Australia. Bureau of Mineral Resources, Geology and Geophysics. Bulletin) by A. A Öpik,  1958
 - Upper Steptoean (Upper Cambrian) Trilobites from the McKay Group of southeastern British Columbia, Canada (Memoir / Paleontological Society) by B. D. E Chatterton,  1998
 - Silicified Middle Ordovician trilobites from the South Nahanni River area, District of Mackenzie, Canada (Palaeontographica ; Abt. A) by B. D. E Chatterton,  1976
 - The Ordovician trilobite Hadrohybus Raymond 1925, and its family relationships (Postilla) by Richard A Fortey,  1988
 - The Cambrian faunas of north-eastern Australia: Part 3, the polymerid trilobites (with supplement no. 1) (University of Queensland papers. Department of Geology) by F. W Whitehouse,  1939
 - Cambrian and lower ozarkian trilobites (with plates 9 to 14) (Smithsonian miscellaneous collections) by Charles D Walcott,  1924
 - Olenelloid tribolites [i.e., trilobites]: Type species, functional morphology and higher classification (Philosophical transactions of the Royal Society of London, B. Biological sciences) by H. B Whittington,  1989
 - The lower Ordovician stratigraphy and trilobites of the Landeyran Valley and the neighbouring district of the Montagne Noire, South-Western France (Bulletin of The British Museum) by William Thornton Dean,  1966
 - Stratigraphy of the Garden City formation in northeastern Utah, and its trilobite faunas (Peabody Museum of Natural History. Bulletin) by Reuben James Ross,  1951
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