† Ptychopariida

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• G. Geyer, 2015 - Exotic trilobites from the Lower–Middle Cambrian boundary interval in Morocco and their bearing on the Cambrian Series 3 lower boundary - Paläontologische Zeitschrift (89), 749-781 (journal article, English)

• Z. Zhou, 2014 - Ordovician (Darriwilian-early Katian) trilobite faunas of northwestern Tarim, Xinjiang, China - Memoirs of the Association of Australasian Palaeontologists (46), 1-142 (journal article, English)

• R. A. Fortey, 2013 - Lower Ordovician trilobites of the Kirtonryggen Formation, Spitsbergen - Fossils and Strata (59), 1-116 (journal article, English)

• T.-Y. Park, 2013 - Late Middle Cambrian (Cambrian Series 3) Trilobite Faunas from the Lowermost Part of the Sesong Formation, Korea and Their Correlation with North China - Journal of Paleontology (87), 991-1003 (journal article, English)

• F. C. Shaw, 2011 - Ordovician trilobites from the Romaine and Mingan Formations (Ibexian-Late Whiterockian), Mingan Islands, Quebec - Journal of Paleontology (85), 406-441 (journal article, English)

• J. M. Adrain, 2011 - Class Trilobita Walch, 1771 - Animal biodiversity: an outline of higher-level classification and survey of taxonomic richness (3148), 104-109 (book chapter, English)

• F. A. Sundberg, 2011 - Detailed trilobite biostratigraphy across the proposed GSSP for stage 5 ("Middle Cambrian" boundary) at the Wuliu-Zengjiayan section, Guizhou, China - Bulletin of Geosciences (86), 423-464 (journal article, English)

• M. Ghobadi Pour, 2011 - Late Ordovician trilobites from the Karagach Formation of the western Tarbagatai Range, Kazakhstan - Earth and Environmental Science Transactions of the Royal Society of Edinburgh (101), 161-187 (journal article, English)

• S. Peng, 2009 - Cambrian Trilobites from the Parahio and Zanskar Valleys, Indian Himalaya - Journal of Paleontology Memoir (83), 1-95 (journal article, English)

• J. Esteve, 2009 - Enrolment in Conocoryphe heberti Munier-­Chalmas & Bergeron, 1889 (Middle Cambrian, Iberian Chain, NE Spain) and coaptive structures within family Conocoryphidae - Estudios Geológicos (65), - (journal article, Spanish)

• M. G. Pour, 2009 - Silicified Middle Cambrian trilobites from Kyrgystan - Palaeontology (52), 1039-1056 (journal article, English)

• H. Özdikmen, 2009 - Nomenclatural changes for twenty trilobites genera - Munis Entomology & Zoology (4), 155-171 (journal article, English)

• E. Landing, 2008 - Faunas and Cambrian volcanism on the Avalonian marginal platform, southern New Brunswick - Journal of Paleontology (82), 884-905 (journal article, English)

• Z. Zhou, 2008 - - Trilobite record of China (), 1-401 (book/book chapter, English)

• H. Özdikmen, 2008 - Nomenclatural changes for three preoccupied trilobites genera - Munis Entomology & Zoology (3), 317-320 (journal article, English)

• J. M. Adrain, 2007 - Bearriverops, a new Lower Ordovician trilobite genus from the Great Basin, western USA, and classification of the family Dimeropygidae - Canadian Journal of Earth Sciences (44), 337-366 (journal article, English)

• Q. Li, 2006 - Huaiaspis, a new Cambrian trilobite genus from northern Anhui - Acta Palaeontologica Sinica (45), 540-548 (journal article, Chinese)

• V. Kordule, 2006 - Ptychopariid trilobites in the Middle Cambrian of Central Bohemia (taxonomy, biostratigraphy, synecology) - Bulletin of Geology (81), 277-304 (journal article, English)

• A. I. Varlamov, 2006 - The Upper Cambrian of the Chopko River section, Norilsk region, northwestern Siberian Platform: stratigraphy and trilobites - Paleontological Journal (40), 1-56 (journal article, English)

• H. Özdikmen, 2006 - Nomenclatural changes for fourteen trilobites genera - Munis Entomology & Zoology (1), 179-190 (journal article, English)

• W. T. Dean, 2006 - Cambrian stratigraphy and trilobites of the Samur Dag area, south of Hakkari, southeastern Turkey - Turkish Journal of Earth Sciences (15), 225-257 (journal article, English)

• Z. Zhu, 2006 - Eoshumardia (Trilobita, Cambrian), a junior synonym of Koldinioidia - Alcheringa (30), 183-189 (journal article, English)

• Y. Duan, 2004 - New polymerid trilobites and the first record of Erixanium from Upper Cambrian in western Hunan, China - Acta Palaeontologica Sinica (43), 63-71 (journal article, English)

• S. Peng, 2004 - - Polymerid trilobites from the Cambrian of northwestern Hunan, China, Volume 1: Corynexochida, Lichida and Asaphida (), 1-333 (book/book chapter, English)

• F. A. Sundberg, 2003 - Early and Mid Cambrian Trilobites from the Outer-shelf Deposits of Nevada and California, USA - Palaeontology (46), 945-986 (journal article, English)

• F. A. Sundberg, 2003 - Trilobites of the lower Middle Cambrian Poliella denticulata biozone (new) of southeastern Nevada - Journal of Paleontology (77), 331-359 (journal article, )

• P.S. Hong, 2003 - Trilobites from the Lejopyge armata zone (Upper Middle Cambrian) of the Machari Formation, Yongwol Group, Korea - Journal of Paleontology (77), 895-907 (journal article, )

• S. E. Peters, 2003 - Evenness, richness and the Cambrian-Paleozoic faunal transition in North America: an assemblage-level perspective - The University of Chicago (), 1-279 (Ph.D. thesis, English)

• N. C. Hughes, 2002 - Kunmingaspis (Trilobita) putatively from the Yunling Collage, and the Cambrian history of the Himalayan syntaxial region - Journal of Paleontology (76), 709-717 (journal article, English)

• P. A. Jell, 2002 - Available generic names for trilobites - Memoirs of the Queensland Museum (48), 331-553 (journal article, English)

• J. J. Sepkoski, Jr., 2002 - A compendium of fossil marine animal genera - Bulletins of American Paleontology (363), 1-560 (serial monograph, English)

• K. L. Luo, 2001 - Upper Middle-Upper Cambrian trilobites of Hancheng area, Shaanxi - Acta Palaeontologica Sinica (40), 371-387 (journal article, Chinese)

• Y. H. Lu, 2001 - Trilobites from the Middle Cambrian Hsuchuangian stage of Zhangxia, Changqing county, Shandong province - Acta Palaeontologica Sinica (40), 279-293 (journal article, Chinese)

• J. Y. Duan, 2001 - Early Cambrian Siberian fauna from Yichun of Heilongjiang Province - Acta Palaeontologica Sinica (40), 362-370 (journal article, Chinese)

• B. G. Waisfeld, 2001 - Systematics of Shumardiidae (Trilobita), with new species from the Ordovician of Argentina - Journal of Paleontology (75), 827-859 (journal article, English)

• F. A. Sundberg, 2000 - Ptychoparid trilobites of the Lower-Middle Cambrian boundary interval, Pioche Shale, southeastern Nevada - Journal of Paleontology (74), 604-630 (journal article, )

• J.-S. Bao, 2000 - Late Late Cambrian trilobites from near Birch Inlet, south-western Tasmania - Palaeontology (43), 881-917 (journal article, English)

• F.A. Sundberg , 2000 - Ptychopariid trilobites of the lower–middle Cambrian boundary interval, Pioche Shale, southwestern Nevada. Journal of Paleontology - (74), 604-630 (journal article, English)

• O. A. Hoel, 1999 - Trilobites of the Hagastrand Member (Tøyen Formation, lowermost Arenig) from tbe Oslo Region, Norway, Part Il : Remaining non-asaphid groups - Norsk Geologisk Tidsskrift (79), 259-280 (journal article, English)

• J. L. Yuan, 1999 - Lower-Middle Cambrian boundary and trilobite fauna at Laoyingshan, Huainan, Anhui - Acta Palaeontologica Sinica (38), 407-422 (journal article, Chinese)

• L. N. Repina, 1999 - Trilobites from the Lower and Lowermost middle Cambrian of the Kiya river reference section (Kuznetsk, Alatau) - Annales de Paléontologie (85), 3-56 (serial monograph, English)

• Y. Duan, 1999 - Middle and Upper Cambrian polymerid trilobites and biostratigraphy, Fenghuang area, western Hunan Province, China - Proceedings of the Royal Society of Victoria (111), 141-172 (journal article, English)

• J. L. Yuan, 1998 - New polymerid trilobites from the Chefu Formation in early Late Cambrian of eastern Guizhou - Acta Palaeontologica Sinica (37), 137-172 (journal article, English)

• J. D. Eddy, 1998 - Early Middle Cambrian Albertella biozone trilobites of the Pioche Shale, southeastern Nevada - Journal of Paleontology (72), 864-887 (journal article, )

• J. H. Stitt, 1998 - Trilobites from the Cedarina dakotaensis zone, lowermost part of the Deadwood Formation, (Marjuman Stage, Upper Cambrian), Black Hills South Dakota - Journal of Paleontology (72), 1030-1046 (journal article, )

• J. L. Yuan, 1997 - A preliminary study on Lower-Middle Cambrian boundary and trilobite fauna at Balang, Taijiang, Guizhou, south China - Acta Palaeontologica Sinica (36), 494-524 (journal article, Chinese)

• P. A. Jell, 1997 - Himalayan Cambrian trilobites - The Palaeontological Association (58), 1-113 (serial monograph, English)

• H. B. Whittington, 1997 - Trilobita. Introduction, Order Agnostina, Order Redlichiida. Volume 1 - Treatise on Invertebrate Paleontology (O), 1-530 (serial monograph, English)

• J. R. Laurie, 1996 - Early Ordovician trilobite taxonomy and biostratigraphy of the Emanuel Formation, Canning Basin, western Australia. Part 1 - Palaeontographica Abteilung A (240), 65-103 (journal article, English)

• W. Zhang, 1995 - Cambrian stratigraphy and trilobites from Henan - Palaeontologia Cathayana (6), 1-166 (journal article, English)

• S. C. Peng, 1995 - New polymerid trilobites from Middle Cambrian Huaqiao Formation of western Hunan - Acta Palaeontologica Sinica (34), 277-300 (journal article, Chinese)

• R. Wolfart, 1994 - Middle Cambrian Faunas (Brachiopoda, Mollusca, Trilobita) from Exotic Limestone Blocks, Reilly Ridge, North Victoria Land, Antarctica; their Biostratigraphic and Paleogeographic Significance - Geologisches Jahrbuch (B/84), 1-161 (serial monograph, English)

• J. Yang, 1993 - - Cambrian stratigraphy, lithofacies, paleogeography and trilobite faunas of East Qinling-Dabashan Mountains, China (), 1-246 (book/book chapter, English)

• J. L. Zhang, 1993 - Some Late Cambrian trilobites from Kushan Formation of Qingshuihe, Inner Mongolia - Acta Palaeontologica Sinica (32), 740-746 (journal article, Chinese)

• S.R. Westrop, 1992 - Upper Cambrian (Marjuman-Steptoean) trilobites from the Port Au Port Group, western Newfoundland - Journal of Paleontology (66), 228-255 (journal article, English)

• S. Peng, 1992 - Upper Cambrian biostratigraphy and trilobite faunas of the Cili-Taoyuan area, northwestern Hunan, China - Memoir of the Association of Australasian Palaeontologists (13), 1-119 (serial monograph, English)

• W. H. Fritz, 1991 - Lower Cambrian Trilobites from the Illtyd Formation, Wernecke Mountains, Yukon Territory - Geological Survey of Canada Bulletin (409), - (serial monograph, English)

• O. Fatka, 1990 - Vyscystis ubaghsi gen. et sp.nov., imbricate eocrinoid from Czechoslovakia (Echinodermata, Middle Cambrian) - Vestnik Ustredniho Ustavu Geologickeho (65), 315-320 (journal article, English)

• R. A. Fortey, 1990 - Ontogeny, hypostome attachment and trilobite classification - Palaeontology (33), 529-576 (journal article, English)

• P. D. Kruse, 1990 - Cambrian palaeontology of the Daly Basin - Northern Territory Geological Survey (7), 1-58 (serial monograph, English)

• R. Ludvigsen, 1989 - Sunwaptan (Upper Cambrian) trilobites of the Cow Head Group, western Newfoundland, Canada - Palaeontographica Canadiana (6), 1-175 (serial monograph, English)

• Y. H. Lu, 1989 - The Cambrian trilobites of western Zhejiang - Palaeontologia Sinica, new series B (25), 1-287 (serial monograph, Chinese)

• Z. L. Zhu, 1989 - Upper Cambrian trilobites from Tangshan, Hebei Province, North China - Palaeontologia Cathayana (4), 199-259 (journal article, English)

• Y. H. Lu, 1988 - Trilobites of the Maochuang Formation and its age - Memoirs of Nanjing Institute of Geology and Palaeontology (24), 331-366 (journal article, Chinese)

• H. Y. Zhu, 1987 - Cambrian trilobites from Xijiadian, Junxian, Hubei - Acta Palaeontologica Sinica (26), 86-95 (journal article, Chinese)

• J. L. Zhang, 1986 - Some Late Cambrian Kushanian trilobites from Pinglu, Shanxi - Acta Palaeontologica Sinica (25), 663-671 (journal article, Chinese)

• Z. Zhou, 1986 - Ordovician trilobites from north and northeastern China - Palaeontographica Abteilung A (192), 157-210 (journal article, English)

• S. R. Westrop, 1986 - Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta - Palaeontographica Canadiana (3), 1-179 (serial monograph, English)

• Y. Qian, 1985 - Late Late Cambrian trilobites from the Tangcun Formation of Jingxian, southern Anhui - Palaeontologia Cathayana (2), 137-167 (journal article, English)

• K. Perch-Nielsen, 1985 - Mesozoic calcareous nannofossils. - in H. H. Bolli, J. B. Saunders, and K. Perch-Nielsen, eds., Plankton Stratigraphy. Cambridge University Press. (), 329-426 (book/book chapter, English)

• J. L. Zhang, 1985 - New material of the Early Gushanian trilobites in Zhuozishan district, Nei Monggol Zizhiqu (Autonomous Region) - Bulletin of the Tianjin Institute of Geology and Mineral Resources (13), 111-120 (journal article, Chinese)

• H. Qiu, 1984 - Trilobites from the Upper Cambrian Tangcun Formation in Jingxian, southern Anhui - Acta Palaeontologica Sinica (23), 329-341 (journal article, Chinese)

• Y. Qian, 1984 - Middle and early Upper Cambrian trilobites from Kunshan, Jiangsu with reference to their distribution in the Lower Yangtze Region - Acta Palaeontologica Sinica (23), 170-184 (journal article, Chinese)

• R. A. Henderson, 1983 - Early Ordovician faunas from the Mount Windsor Subrovince, northeastern Queensland - Association of Australasian Palaeontologists (), - (journal article, English)

• R. A. Fortey, 1983 - Cambrian-Ordovican trilobites from the boundary beds in western Newfoundland and their phylogenetic significance - in D. E. G. Briggs and P. D. Lane, eds, Trilobites and other Early Arthropods, Special Papers in Palaeontology 30 (), 179-211 (book/book chapter, English)

• T. Y. Ju, 1983 - Early Cambrian trilobites from the Hotang and Dachenling formations of Zhejiang - Acta Palaeontologica Sinica (22), 628-636 (journal article, Chinese)

• T. R. Lin, 1983 - Discovery of Cambrian trilobites in Kunshan of southeast Jiangsu with reference to the faunal provinciality and palaeogeography - Acta Palaeontologica Sinica (22), 399-412 (journal article, Chinese)

• H. J. Guo, 1982 - Lower Cambrian trilobites of the Benxi area, Liaoning - Acta Palaeontologica Sinica (21), 615-631 (journal article, Chinese)

• W. T. Dean, 1982 - Middle Cambrian trilobites from the Sosnik Formation, Derik-Mardin district, south-eastern Turkey - Bulletin of the British Museum (Natural History), Geology Series (36), 1-41 (journal article, English)

• Y. L. Zhao, 1981 - Early and Middle Cambrian trilobites from Daoping of Fuquan, Guizhou - Acta Palaeontologica Sinica (20), 216-224 (journal article, Chinese)

• W. T. Zhang, 1981 - Trilobites from the Hsuchuang Formation (lower Middle Cambrian) in western marginal parts of the North China Platform - Geological Society of America Special Paper (187), 161-175 (journal article, English)

• G. K. Ergaliev, 1980 - - Trilobity srednego i verkhnego Kembriya Malogo Karatau [Middle and Upper Cambrian trilobites from Malyy Karatau] (), 1-211 (book/book chapter, Russian)

• W. T. Zhang, 1980 - Cambrian trilobite faunas of southwestern China - Palaeontologia Sinica, new series B (16), 1-497 (serial monograph, Chinese)

• W. Zhang, 1980 - Cambrian stratigraphy and trilobite fauna from the Zhongtiao Mountains, southern Shanxi - Memoirs of Nanjing Institute of Geology and Palaeontology (16), 39-110 (journal article, Chinese)

• H. E. Vokes, 1980 - Genera of the Bivalvia: a systematic and bibliographic Catalogue - Genera of the Bivalvia: a systematic and bibliographic Catalogue (), - (book/book chapter, English)

• R. A. Fortey, 1980 - The Ordovician trilobites of Spitsbergen. III. Remaining trilobites of the Valhallfonna Formation - Norsk Polarinstitutt Skrifter (171), 1-163 (serial monograph, English)

• P. Ahlberg, 1980 - Early Cambrian trilobites from northern Scandinavia - Norsk Geologisk Tidsskrift (60), 153-159 (journal article, English)

• Y. Lu, 1980 - Cambrian trilobites from Chuxian-Quanjiao region, Anhui - Memoirs of Nanjing Institute of Geology and Palaeontology (16), 1-38 (journal article, Chinese)

• A. R. Palmer, 1979 - Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin - United States Geological Survey Professional Paper (1047), 1-131 (journal article, English)

• W. T. Dean, 1973 - Ordovician trilobites from the Keele Range, Northwestern Yukon Territory - Geological Survey of Canada Bulletin (223), 1-43 (serial monograph, English)

• A. R. Palmer, 1972 - Early and Middle Cambrian Trilobites from Antarctica - Contributions to the geology of Antarctica (), - (journal article, English)

• W. H. Fritz, 1972 - Lower Cambrian trilobites from the Sekwi Formation type section, northwestern Canada - Geological Survey of Canada Bulletin (212), - (serial monograph, English)

• J. H. Shergold, 1971 - Late Upper Cambrian trilobites from the Gola Beds, western Queensland - Commonwealth of Australia, Department of National Development, Bureau of Mineral Resources, Geology, and Geophysics Bullein (112), 1-87 (journal article, English)

• H. B. Whittington, 1968 - Zonation and correlation of Canadian and Early Mohawkian series - in E. Zen, ed., Studies of Appalachian geology, northern and marine (), 49-60 (book/book chapter, English)

• F.C. Shaw, 1968 - Early Middle Ordovician (Chazy) trilobites of New York - New York State Museum and Science Service Memoir (17), 1-163 (journal article, English)

• A. V. Rozova, 1968 - Biostratigrafiya i trilobity verkhnego Kembriya i nizhnego Ordovika severo-zapada Sibirskoy Platformy [Biostratigraphy and trilobites of the Upper Cambrian and Lower Ordovician of the northwestern Siberian platform] - Trudy Instituta Geologii i Geofiziki, Sibirskoye Otdeleniye (36), 1-195 (serial monograph, Russian)

• W. H. Fritz, 1968 - Lower and early Middle Cambrian trilobites from the Pioche Shale, East-Central Nevada, U.S.A. - Palaeontology (11), 36-43 (journal article, English)

• R. A. Robison, 1968 - Tremadocian trilobites from the Nochixtlan Region, Oaxaca, Mexico - Journal of Paleontology (42), 767-800 (journal article, )

• R. J. Ross, Jr., 1967 - Some Middle Ordovician Brachiopods and Trilobites from the Basin Ranges, Western United States - United States Geological Survey Professional Paper (523-D), D1-D4 (journal article, English)

• H. B. Whittington, 1965 - Trilobites of the Ordovician Table Head Formation, western Newfoundland - Bulletin of the Museum of Comparative Zoology (132), 275-441 (serial monograph, English)

• F. Rasetti, 1965 - Middle Cambrian trilobites of the Pleasent Hill Formation in Central Pennsylvania - Journal of Paleontology (39), 1007-1014 (journal article, )

• A. R. Palmer, 1965 - Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States - United States Geological Survey Professional Paper (493), 1-105 (serial monograph, English)

• R. A. Robison, 1964 - Late Middle Cambrian faunas from Western Utah - Journal of Paleontology (38), 510-566 (journal article, English)

• A. V. Rozova, 1964 - - Biostratigrafiya i opisaniye trilobitov srednego i verkhnego Kembriya severo-zapada Sibirskoy Platformy. Opisaniye stratotipicheskogo razreza (reka Kulyumbe) [Biostratigraphy and description of trilobites of the Middle and Upper Cambrian of the northweste (), 1-148 (book/book chapter, Russian)

• F. Rasetti, 1963 - Additions to the Upper Cambrian fauna from the conglomerate boulders at Levis, Quebec - Journal of Paleontology (37), 1009-1017 (journal article, )

• H. B. Whittington, 1963 - Middle Ordovician trilobites from Lower Head, western Newfoundland - Bulletin of the Museum of Comparative Zoology (129), 1-118 (serial monograph, English)

• C. Lochman, 1962 - An Aphelaspis Zone faunule from Logan, Montana - Journal of Paleontology (36), 431-441 (journal article, English)

• A.R. Palmer, 1962 - Glyptagnostus and associated trilobites in the United States - United States Geological Survey Professional Paper (), - (journal article, English)

• R. E. Grant, 1962 - Trilobite distribution, upper Franconia Formation (Upper Cambrian), southeastern Minnestoa - Journal of Paleontology (36), 965-998 (journal article, English)

• F. Rasetti, 1961 - Dresbachian and Franconian trilobites of the Conococheague and Frederick Limestones of the central Appalachians - Journal of Paleontology (35), 104-124 (journal article, English)

• A. R. Palmer, 1960 - Trilobites of the Upper Cambrian Dunderberg Shale, Eureka District, Nevada - United States Geological Survey Professional Paper (334-C), 53-107 (serial monograph, English)

• C. L. Chu, 1959 - Trilobites from the Kushan Formation of north and northeastern China - Memoirs of the Institute of Palaeontology Academia Sinica (2), 44-128 (journal article, Chinese)

• J. A. Weir, 1959 - Ashgillian trilobites from Co. Clare, Ireland - Palaeontology (1), 369-383 (journal article, English)

• H. J. Harrington, 1959 - Arthropoda 1 - Treatise on Invertebrate Paleontology (O), 1-560 (serial monograph, English)

• H. J. Harrington, 1957 - Ordovician trilobites of Argentina - Department of Geology, University of Kansas Special Publication. Lawrence: University of Kansas Press (1), 1-276 (, English)

• F. Rasetti, 1957 - Additional fossils from the Middle Cambrian Mt. Whyte Formation of the Canadian Rocky Mountains - Journal of Paleontology (31), 955-972 (journal article, English)

• A. B. Shaw, 1957 - Paleontology of Northwestern Vermont. VI. The early Middle Cambrian fauna - Journal of Paleontology (31), 785-792 (journal article, )

• P. Hupé, 1955 - Classification des trilobite - Annales de Paléontologie (41), 91-325 (journal article, English)

• R. P. Tripp, 1954 - Caradocian trilobites from the mudstones at Craighead Quarry, near Girvan, Ayrshire - Transactions of the Royal Society of Edinburgh (62), 655-693 (journal article, English)

• A. R. Palmer, 1954 - The Faunas of the Riley Formation in Central Texas - Journal of Paleontology (28), 709-786 (journal article, English)

• G. A. Cooper, 1952 - Cambrian Stratigraphy and Paleontology near Caborca, Northwestern Sonora, Mexico - Smithsonian Miscellaneous Collections (119), 1-181 (journal article, English)

• G. Henningsmoen, 1952 - Early middle Cambrian fauna from Rogaland, SW Norway (Paradoxides oelandicus stage = lc α) - Norsk Geologisk Tidsskrift (30), 13-30 (journal article, English)

• F. Rasetti , 1951 - Middle Cambrian stratigraphy and faunas of the Canadian Rocky Mountains. Smithsonian Miscellaneous Collections, 116(5), 277 p., 34 pls. - (), - (journal article, English)

• R. J. Ross, Jr., 1951 - Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas - Yale Peabody Museum of Natural History Bulletin (6), 1-161 (serial monograph, English)

• P. Tasch, 1951 - Fauna and paleoecology of the Upper Cambrian Warrior Formation of central Pennsylvania - Journal of Paleontology (25), 275-306 (journal article, English)

• B. F. Howell, 1950 - A revision of the fauna of the north Welsh Conocoryphe viola beds implying a Lower Cambrian age - Geological Magazine (87), 1-16 (journal article, English)

• J. L. Wilson, 1949 - The trilobite fauna of the Elvina zone in the Basal Wilberns limestone of Texas - Journal of Paleontology (23), 25-44 (journal article, English)

• R. Rka, 1940 - Trilobiti nejstarší české kambrické fauny od Tylovic z Kamenárky - Rozpravy I. tídyeské akademie (49), 1-12 (journal article, English)

• C. E. Resser, 1939 - The Spence Shale and its fauna - Smithsonian Miscellaneous Collections (97), 1-29 (journal article, English)

• C. E. Resser, 1938 - Middle Cambrian fossils from Pend Oreille Lake, Idaho - Smithsonian Miscellaneous Collections (97), 1-12 (serial monograph, English)

• C. Lochman, 1938 - Middle and upper Cambrian Faunas from western Newfoundland - Journal of Paleontology (12), 461-477 (journal article, English)

• C. E. Resser, 1936 - Second contribution to nomenclature of Cambrian trilobites - Smithsonian Miscellaneous Collections (95), 1-29 (journal article, English)

• J. F. Mason, 1935 - Fauna of the Cambrian Cadiz Formation, Marble Mountains, California - Bulletin of the Southern California Academy of Sciences (34), 97-120 (journal article, English)

• C. E. Resser, 1935 - Nomenclature of some Cambrian trilobites - Smithsonian Miscellaneous Collections (93), 1-46 (journal article, English)

• T. Kobayashi, 1931 - Studies on the stratigraphy and palaeontology of the Cambro-Ordovician Formation of Hua-lien-chai and Niu-hsin-tai, South Manchuria - Japanese Journal of Geology and Geography (8), 131-189 (journal article, English)

• E. S. Cobbold, 1931 - Additional fossils from the Cambrian Rocks of Comley, Shropshire - Quarterly Journal of the Geological Society (87), 459-512 (journal article, English)

• H. Mansuy, 1916 - Faunes Cambriennes de l'Extréme-Orient méridional - Mémoires du Service Géologique de l'Indochine (5), 1-44 (journal article, English)

• C. D. Walcott, 1916 - Cambrian geology and paleontology III. No. 3 - Cambrian trilobites - Smithsonian Miscellaneous Collections (64), 157-258 (serial monograph, English)

• H.F. Cleland, 1900 - The Calciferous of the Mohawk Valley, with descriptions of new species - Bulletins of American Paleontology (3), 1-26 (journal article, English)