Systematic Listing of Trilobite Families
Main Sources:
TREATISE ON INVERTEBRATE PALEONTOLOGY
(Part O, Arthropoda 1: Trilobita, revised) 1997
and
Jell, P. & J. Adrain. 2003. Available generic names for trilobites.
Memoirs of the Queensland Museum 48(2):331-551.
last revised 10 January 2008 by S. M. Gon III

The list of families below is arranged phylogenetically in the order presented in the Treatise (1997). In 2003, Peter Jell and Jonathan Adrain presented an exhaustive listing of trilobite generic names, and also included a listing according to families. Their list of families is rather different than the arrangement provided in the 1997 Treatise volume, so I have included their family arrangement differences (and other disparities) in green text. Author citations are also provided for the Agnostida and Redlichiida according to the revised Treatise (1997), and for other orders according to Jell & Adrain 2003 and a variety of specific sources. I hope it encourages trilobite enthusiasts to study the new treatise and gain insight on the classification of this diverse and fascinating group of organisms. Ongoing, revisions will be noted in red text and cited accordingly.


Class TRILOBITA Walch, 1771
Agnostida
ORDER AGNOSTIDA Salter, 1864
  SUBORDER AGNOSTINA Salter, 1864
  Superfamily Agnostoidea M'Coy, 1849
   Agnostidae M'Coy, 1849
     Subfamily Agnostinae
     Subfamily Ammagnostinae
     Subfamily Glyptagnostinae [family Glyptagnostidae]
   Ptychagnostidae Kobayashi, 1939
   Spinagnostidae Howell, 1935
     Subfamily Spinagnostinae [into family Peronopsidae]
     Subfamily Doryagnostinae [family Doryagnostidae]
   Peronopsidae Westergård, 1936
   Diplagnostidae Whitehouse, 1936
     Subfamily Diplagnostinae
     Subfamily Oidalagnostinae
     Subfamily Pseudagnostinae
   Clavagnostidae Howell, 1937
     Subfamily Clavagnostinae
     Subfamily Aspidagnostinae
   Metagnostidae Jaekel, 1909
  Superfamily Uncertain
   Phalacromidae Hawle & Corda, 1847 [into Agnostidae]
   Sphaeragnostidae Kobayashi, 1939 [into Peronopsidae]
  Superfamily Condylopygoidea Raymond, 1913
   Condylopygidae Raymond, 1913
 SUBORDER EODISCINA Kobayashi, 1939
  Superfamily Eodiscoidea Raymond, 1913
   Tsunyidiscidae S. Zhang, 1980
   Hebediscidae Kobayashi, 1944
   Calodiscidae Kobayashi, 1943
   Weymouthiidae Kobayashi, 1943
   Yukoniidae S. Zhang, 1980
   Eodiscidae Raymond, 1913
Lichida
ORDER LICHIDA Moore 1959
  SUBORDER LICHINA
  Superfamily Lichoidea
   Lichidae
   Lichakephalidae (including Eoacidaspidae?)

..........odontopleurida
ORDER ODONTOPLEURIDA Whittington 1959
 SUBORDER ODONTOPLEURINA
  Superfamily Odontopleuroidea

   Odontopleuridae (including Eoacidaspidae?)
   Selenopeltidae [into Odontopleuridae]
  Superfamily Dameselloidea
   Damesellidae
Redlichiida
ORDER REDLICHIIDA Richter, 1932
  SUBORDER OLENELLINA Walcott, 1890b
  Superfamily Olenelloidea Walcott, 1890
   Olenellidae Walcott, 1890
     Subfamily Olenellinae
     Subfamily Biceratopsinae
     Subfamily Bristoliinae
     Subfamily Gabriellinae
     Subfamily Laudoniinae
     Subfamily Wanneriinae
   Holmiidae Hupé, 1953
     Subfamily Holmiinae
     Subfamily Callaviinae
  Superfamily Fallotaspidoidea Hupé, 1953
   Fallotaspididae Hupé, 1953
     Subfamily Fallotaspidinae
     Subfamily Daguinaspidinae
   Archaeaspididae Repina, 1979
   Judomiidae Repina, 1979
   Neltneriidae Hupé, 1953
   Nevadiidae Hupé, 1953
  SUBORDER REDLICHIINA Richter, 1932
  Superfamily Emuelloidea Pocock, 1970
   Emuellidae Pocock, 1970
   Megapharanaspidae Paterson & Jago 2006
  Superfamily Redlichioidea Poulsen, 1927
   Redlichiidae Poulsen, 1927
     Subfamily Redlichiinae
     Subfamily Metaredlichiinae
     Subfamily Neoredlichiinae
     Subfamily Pararedlichiinae
     Subfamily Wutingaspinae
   Dolerolenidae Kobayashi, 1951
     Subfamily Doleroleninae
     ?Subfamily Paramalungiinae
   Yinitidae Hupé, 1953
   Mayiellidae Chang, 1966
   Gigantopygidae Harrington, 1959
     Subfamily Gigantopyginae
     Subfamily Yiliangellinae
   Saukiandidae Hupé, 1953
     Subfamily Saukiandinae
     Subfamily Despujolsiinae
     Subfamily Resseropinae
   Metadoxididae Whitehouse, 1939
   Abadiellidae Hupé, 1953
   Kueichowiidae Lu, 1965
   Menneraspididae Pokrovskaya, 1959
   Redlichinidae Zhang & Lin, 1980
   Chengkouaspidae Zhang & Lin, 1980
  Superfamily Paradoxidoidea Hawle & Corda, 1847
   Paradoxididae Hawle & Corda, 1847
   Centropleuridae Angelin, 1854
   Xystriduridae Öpik, 1975
Corynexochida
ORDER CORYNEXOCHIDA Kobayashi 1935
  SUBORDER CORYNEXOCHINA
  Superfamily Corynexochoidea
   Amgaspididae
   Corynexochidae
   Cheiruroididae [into Oryctocephalidae]
   Chenghuiidae [Chengkouiidae]
   Dorypygidae
   Ogygopsidae [into Dorypygidae]
   Oryctocephalidae
   Dolichometopidae
   Edelsteinaspidae
   Jakutidae
   Longduiidae [into Yinitidae (ORDER REDLICHIIDA)]
   Zacanthoididae
   Dinesidae
  SUBORDER ILLAENINA
  Superfamily Illaenoidea
   Styginidae (Scutelluidae)
   Phillipsinellidae [into Styginidae]
   Illaenidae
   Panderidae
   Tsinaniidae (into Asaphida per Zhu et al 2007)
  SUBORDER LEIOSTEGIINA
  Superfamily Leiostegioidea
   Leiostegiidae
   Pagodiidae
   Kaolishaniidae
   Cheilocephalidae
   Lecanopygidae [Illaenuridae]
   Shirakellidae (?)
   Ordosiidae
Phacopida
ORDER PHACOPIDA Salter 1864
  SUBORDER CALYMENINA
  Superfamily Calymenoidea
   Calymenidae
   Pharostomatidae
   Homalonotidae
   Bavarillidae
   Carmonidae [not listed as family]
   Bathycheilidae
  SUBORDER PHACOPINA
  Superfamily Phacopoidea
   Phacopidae
   Pterygometopidae
  Superfamily Dalmanitoidea
   Dalmanitidae
   Prosopiscidae
   Diaphanometopidae
  Superfamily Acastoidea
   Acastidae
   Calmoniidae
  SUBORDER CHEIRURINA
  Superfamily Cheiruroidea
   Cheiruridae
   Pliomeridae
   Pilekiidae
   Encrinuridae
   Staurocephalidae [into Encrinuridae]
   Hammatocnemidae [into Cheiruridae]
Proetida
ORDER PROETIDA Fortey & Owens 1975
  SUBORDER PROETINA
  Superfamily Proetoidea
   Proetidae
   Tropidocoryphidae
   Phillipsidae [into Proetidae]
  Superfamily Aulacopleuroidea
   Aulacopleuridae
   Brachymetopidae
   Rorringtoniidae
  Superfamily Bathyuroidea
   Bathyuridae
   Dimeropygidae
   Hystricuridae
  Toernquistiidae (per Chatterton et al 1998)
   Celmidae [into Dimeropygidae]
   Lecanopygidae (Illaenuridae) (?)
   Glaphuridae [into Raymondinidae, order uncertain]
   Holotrachelidae
   Telephinidae
   Sharyiidae

Harpetida
ORDER HARPETIDA Ebach & McNamara 2002
  SUBORDER HARPETINA
  Superfamily Harpetioidea
   Harpetidae
   Harpididae (=Loganopeltidae)
   Entomaspididae [into Harpetidae]

Asaphida
ORDER ASAPHIDA Fortey & Chatterton 1988
  SUBORDER ASAPHINA Fortey & Chatterton 1988
  Superfamily Anomocaroidea
   Anomocarellidae
   Anomocaridae
   Pterocephaliidae (includes Housiinae)
   Parabolinoididae
   Dikelokephalinidae [into Hungaiidae (Remopleuridoidea)]
   Aphelaspididae
  Superfamily Asaphoidea
   Asaphidae
   Ceratopygidae
   Tsinaniidae (from Corynexochida per Zhu et al 2007)
  Superfamily Dikelokephaloidea
   Dikelokephalidae
   Andrarinidae
   Saukiidae
   Ptychaspididae
   Eurekiidae
   Loganellidae [into Idahoiidae (Remopleuridoidea)]
  Superfamily Remopleuridioidea
   Remopleurididae
   Kainellidae [into Remopleurididae]
   Opipeuteridae [into Telephinidae (ORDER PROETIDA)]
   Bohemillidae
   Auritamiidae
   Idahoiidae
   Hungaiidae
  Superfamily Cyclopygoidea
   Cyclopygidae
   Taihungshaniidae
   Nileidae
  Superfamily Trinucleioidea
   Trinucleidae
   Dionididae (=Tongxinaspididae) (?)
   Orometopidae [into Alsataspididae]
   Raphiophoridae
   Alsataspididae
   Liostracinidae
  Superfamily Uncertain
   Rhyssometopidae (includes Mapaniidae, Plectriferidae)
   Monkaspididae (=Chelidonocephalidae) (?)
Ptychopariida
ORDER PTYCHOPARIIDA Swinnerton 1915
  SUBORDER PTYCHOPARIINA
  Superfamily Ellipsocephaloidea
   Bigotinidae
   Yunnanocephalidae
   Palaeolenidae
   Estaingiidae
   Ellipsocephalidae
   Protolenidae [into Ellipsocephalidae]
   Aldonaiidae
   Agraulidae
   Wuaniidae
  Superfamily Ptychoparioidea
   Eulomidae
   Antagmidae
   Alokistocaridae

   Ptychopariidae
   Marjumiidae
   Solenopleuridae
   Atopidae
   Holocephalinidae

   Conocoryphidae
   Dokimokephalidae
   Onchonotopsidae [into Catillicephalidae, order uncertain]
   Nepeiidae [Nepeidae]
   Crepicephalidae
   Tricrepicephalidae
   Lonchcephalidae
   Kingstoniidae
   Shumardiidae
   Asaphiscidae
   Cooselidae [into Crepicephalidae]
   Elviniidae (includes Komaspididae)
   Cedariidae
   Norwoodiidae
   Menomoniidae
   Bolaspididae
   Papyriaspididae
   Emmrichellidae [into Asaphiscidae]
   Changshaniidae
   Diceratocephalidae
   Phylacteridae
   Conokephalinidae
   Utiidae

   Tengfengiidae [into Proasaphiscidae]
   Lisaniidae
   Inouyiidae
   Lorenzellidae
   Proasaphiscidae
   Isocolidae
   Ignotogregatidae
   Holanshaniidae [into Proasaphiscidae]
   Mapaniidae
   Acrocephalitidae
   Llanoaspididae
  SUBORDER OLENINA
  Superfamily Olenoidea
   Olenidae
 SUBORDER UNCERTAIN
   Ithyophoridae
 POLYPHYLETIC GROUPS
   Catillicephalidae
   Raymondinidae
   Avoninidae
   Plethopeltidae (near Cedariidae - Norwoodiidae above?)


ORDER UNCERTAIN
   Burlingiidae
   Bathynotidae [into Chengkouaspididae (ORDER REDLICHIIDA)]
   Bestjubellidae [into Lichakephalidae (ORDER LICHIDA)]
   Missisquoiidae (Leiostegiina?)
   Naraoiidae (Do the Naraoiids represent a unique Order?)
   Sarkiidae

Other Classification Issues
   
Order Odontopleurida (Should it be split from Lichida?)

TRILOBITE ORDERS, SUBORDERS, AND SUPERFAMILIES

ORDER SUBORDERS SUPERFAMILIES
AGNOSTIDA
LCam - UOrd
AGNOSTINA
LCam - UOrd  

EODISCINA
LCam - MCam

Agnostoidea
LCam - UOrd

Condylopygoidea
LCam - MCam

Eodiscoidea
LCam - MCam

REDLICHIIDA
LCam - MCam
 
 
OLENELLINA
 LCam only  

REDLICHIINA
 LCam - MCam

Olenelloidea
LCam only
Fallotaspidoidea
LCam only

Emuelloidea
LCam only
Redlichioidea
LCam - MCam
Paradoxidoidea
LCam - MCam

CORYNEXOCHIDA
LCam - UDev (Frasnian)
CORYNEXOCHINA
LCam - UCam

ILLAENINA
UCam - UDev (Frasnian)

LEIOSTEGIINA
MCam - LOrd

Corynexochoidea
LCam - UCam

Illaenoidea
UCam - UDev (Frasnian)


Leiostegioidea
MCam - LOrd
LICHIDA
MCam - MDev
LICHINA
MCam - MDev
Lichoidea
MCam - MDev
odontopleurida ODONTOPLEURIDA
MCam - UDev (Frasnian)
ODONTOPLEURINA
MCam - UDev (Frasnian)
Odontopleuroidea
LOrd? - UDev (Frasnian)

Dameselloidea
MCam - UCam?
PHACOPIDA
LOrd - UDev (Fammenian)
PHACOPINA
LOrd - UDev (Fammenian)

CALYMENINA
LOrd - MDev

CHEIRURINA
LOrd - MDev

Phacopoidea
LOrd - UDev

Dalmanitoidea
LOrd - LDev

Acastoidea
LOrd - MDev

Calymenoidea
LOrd - MDev


Cheiruroidea
LOrd - MDev

PTYCHOPARIIDA
LCam - UOrd
PTYCHOPARIINA
LCam - MOrd

 
 

OLENINA
UCam - UOrd

Ellipsocephaloidea
LCam - MCam
Ptychoparioidea
LCam - MOrd

Olenoidea
UCam - UOrd

ASAPHIDA
MCam - USil
ASAPHINA
MCam - USil
Anomocaroidea
MCam - UCam

Asaphoidea
LOrd - UOrd

Dikelokephaloidea
UCam only
Remopleuridoidea
UCam? - UOrd

Cyclopygoidea
LOrd - UOrd
Trinucleioidea
UCam - USil
PROETIDA
UCam- UPer
PROETINA
UCam- UPer
Aulacopleuroidea
LOrd - UPer

Proetoidea
LOrd - UPer

Bathyuroidea
UCam - MOrd?
HARPETIDA
UCam - UDev (Frasnian)
HARPETINA
UCam - UDev (Frasnian)
Harpetioidea
UCam - UDev (Frasnian)


Selected Sources on
Trilobite Biology and Systematics 

The selected bibliography below includes sources helpful in the exploration of trilobite biology and systematics.
If you have suggestions for other useful citations, please contact me and I'll be happy to add them.
This selected bibliography last revised 24 DECEMBER 2003  S. M. Gon III

Bergstrom, Jan. 1973. Organization, life, and systematics of trilobites. Fossils and Strata 2:1-69, figs. 1-16, pl. 1-5.

Chatterton, B.D.E., and S.E. Speyer. 1990. Applications of the study of trilobite ontogeny. Short Courses in Paleontology, Paleontological Society 3:116-36.

Clarkson, E. N. K. 1975. The evolution of the eye in trilobites. Fossils and Strata 4:7-31.

Clarkson, E. N. K. & R. Levi-Setti. 1975. Trilobite eyes and the optics of Descartes and Huygens. Nature 254 (1975): 663-667.

Fortey, R.A. 1990a. Ontogeny, hypostome attachment, and trilobite classification. Palaeontology 33:529-76, figs. 1-19, pl. 1.

Fortey, R.A. 1990b. Trilobite evolution and systematics. Short Courses in Paleontology, Paleontological Society 3:44-65.

Fortey, R.A. 1997. Classification. In Kaesler, R. L., ed. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Trilobita, revised. Volume 1: Introduction, Order Agnostida, Order Redlichiida. xxiv + 530 pp., 309 figs. The Geological Society of America, Inc. & The University of Kansas. Boulder, Colorado & Lawrence, Kansas.

Fortey, R.A. 2001. Trilobite systematics: the last 75 years. J. Paleontology. 75(6):1141-51.

Fortey, R.A., and N.C. Hughes. 1998. Brood pouches in trilobites. J. Paleontology. 72(4):638-49.

Fortey, R. A. & R. M. Owens. 1999. The Trilobite Exoskeleton. in: Functional Morphology of the Invertebrate Skeleton. John Wiley & Sons.

Fortey, R. A. & R. M. Owens. 1999. Feeding habits in trilobites. Palaeontology 42(3):429-65.

Jell, P. A. 2003. Phylogeny of Early Cambrian trilobites. Special Papers in Palaeontology 70:45-57.

Jell, P.A. & J.M. Adrain. 2003  Available generic names for trilobites. Memoirs of the Queensland Museum 48(2):331-553

Jensen, S. 1990. Predation by early Cambrian trilobites on infaunal worms -- evidence from the Swedish Mickwitzia Sandstone. Lethaia 23:29-42.

Kaesler, R. L., ed. 1997. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Trilobita, revised. Volume 1: Introduction, Order Agnostida, Order Redlichiida. xxiv + 530 pp., 309 figs. The Geological Society of America, Inc. & The University of Kansas. Boulder, Colorado & Lawrence, Kansas.

Levi-Setti, R. 1993. Trilobites (2nd Ed.). University of Chicago Press.

McNamara, K.J., and D.M. Rudkin. 1984. Techniques of trilobite exuviation. Lethaia 17:153-73.

Moore, R.C., ed. 1959. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1. Geological Society of America & University of Kansas Press. Lawrence, Kansas & Boulder, Colorado. xix + 560 pp., 415 figs.

Stockton, W.L., and Cowen, R. 1976. Stereoscopic vision in one eye: paleophysiology of the schizochroal eye in trilobites. Paleobiology 2:304-15.

Whittington, H.B. 1988a. Hypostomes of post-Cambrian trilobites. New Mexico Bureau of Mines and Mineral Resource, Memoir 44:321-39, 26 figs.

Whittington, H.B. 1988b. Hypostomes and ventral cephalic sutures in Cambrian trilobites. Palaeontology 31:577-610.

Zhang, W.T. 1980. On the Miomera and Polymera (Trilobita). Scientia Sinica 23:223-34.

Zhang, Xiguang & E. N. K. Clarkson. 1990. The eyes of lower Cambrian eodiscid trilobites. Palaeontology 33:911-932.


Systematic Citations
last revised JANUARY 12, 2002
Order AGNOSTIDA:

Hawle, Ignaz & A.J.C. Corda. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen Koeniglichen Boehmischen Gesellschaft der Wissenschaften. J.G. Calve, Prague. 176 p., 7 pl. [Family Phalacromidae]

Howell, B.F. 1935. New Middle Cambrian agnostian trilobites from Vermont. Journal of Paleontology. 9:218-21, pl. 22. [Family Spinagnostidae]

Howell, B.F. 1937. Cambrian Centropleura vermontensis fauna of northwestern Vermont. Geological Society of America Bulletin 48:1147-210, 6 pl. [Family Clavagnostidae]

Jaekel, O. 1909. Uber die Agnostiden. Zeitschrift der Deutschen Geologischen Gesellschaft 61:380-401. 23 fig. [Family Metagnostidae]

Kobayashi, T. 1939. On the Agnostids (part 1). Journal of the Faculty of Science, Imperial University of Tokyo, Section II, Geology, Minerology, Geography, Seismology. 5(5):69-198. [Suborder Eodiscina; Families Ptychagnostidae, Sphaeragnostidae]

Kobayashi, T. 1943. Brief notes on the eodiscids 1, their classification with a description of a new species and a new variety. Proceedings of the Imperial Academy, Tokyo. 19:37-42, fig. 1-5. [Families Calodiscidae, Weymouthiidae]

Kobayashi, T. 1944. On the eodiscids. Journal of the Faculty of Science, Imperial University of Tokyo, Section II. 7(1):1-74, pl. 1-2, table 1-4. [Family Hebediscidae]

M'Coy, F. 1849. On the classification of some British fossil Crustacea with notices of some new forms in the University collection at Cambridge. Annals and Magazine of Natural History (series 2) 4:161-79, 330-5, 392-414. [Superfamily Agnostoidea, Family Agnostidae]

Raymond, P.E. 1913. On the genera of the Eodiscidae. The Ottawa Naturalist 27:101-6. [Superfamilies Condylopygoidea, Eodisoidea; Families Condylopygidae, Eodiscidae]

Salter, J.W. 1864. A Monograph of British Trilobites, Part 1. Palaeontographical Society, London, Monograph, vol. for 1862. p. 1-80, pl. 1-6. [Order Agnostida, Suborder Agnostina]

Westergård, A.H. 1936. Paradoxides oelandicus beds of Oland: With the account of a diamond boring through the Cambrian at Mossberga. Sveriges Geologiska Undersökning, Series C. no. 394, Årsbok 30, no. 1:1-66, 12 figs., 12 pl. [Family Peronopsidae]

Whitehouse, F.W. 1936. The Cambrian faunas of north-Eastern Australia. Part 1: Stratigraphical outline; Part 2: Trilobita (Miomera), Memoirs of the Queensland Museum 11(1):59-112, fig. 1-4, pl. 8-10. [Family Diplagnostidae]

S. Zhang, 1980. in Zhang, Wentang, Yanhao Lu, Zaoling Zhu, Yiyuan Qian, Huanling Lin, Zhiyi Zhou, Sengui Zhang, & Jinliang Yuan. 1980. Cambrian trilobite faunas of southwestern China. Paleontologia Sinica 159 (new series B, no. 16):1-497, 105 fig., 134 pl. [Families Yukoniidae, Tsunydiscidae]


Order REDLICHIIDA:
last revised January 17, 2002

Angelin, N.P. 1854 in Angelin, N.P. 1851-1878. Paleontologia Scandinavica. Pars 1. Curstacea Formationis Transitionis [fasc. 2 (1854): p. i-ix, 21-92, pl. 25-41.] [Family Centropleuridae]

Chang, W. [also Zhang, Wentang] 1966. On the classification of Redlichiacea, with the description of new families and new genera. Acta Paleontologica Sinica 14(2):135-84, fig. 1-17, pl. 1-6. [Family Mayiellidae]

Harrington, H.J. 1959. Family Gigantopygidae. in: Moore, R.C., ed. 1959. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1. Geological Society of America & University of Kansas Press. Lawrence, Kansas & Boulder, Colorado. xix + 560 pp., 415 figs. [Family Gigantopygidae]

Hawle, Ignaz & A.J.C. Corda. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen Koeniglichen Boehmischen Gesellschaft der Wissenschaften. J.G. Calve, Prague. 176 p., 7 pl. [Family Paradoxididae]

Hupé, P. 1953. Contribution à l'étude du Cambrien inférieur et du Précambrian III de l'Anti-Atlas Marocain. Direction de la Production Industrielle et des Mines, Division des Mines et de la Géologie, Service Géologique, Notes et Mémoires 103:1-402, fig. 1-99, pl. 1-24. [Superfamily Fallotaspidoidea; Families Holmiidae, Fallotaspididae, Neltneriidae, Nevadiidae, Yinitidae, Saukiandidae, Abadiellidae]

Kobayashi, T. 1951. in Kobayashi, T. & F. Kato. 1951. On the ontogeny and ventral morphology of Redlichia chinensis, with description of Alutella nakamurai n. gen., n. sp. Journal of the Faculty of Science, Imperial University of Tokyo, Section II 8(3):99-143, 9 fig., pl. 1-5. [Family Dolerolenidae]

Lu, Y. 1965. Family Kueichowiidae. in: Lu Yenhao, Wentang Chang, Zhaoling Zhu, Yiyuan Qian & Liwen Xiang. 1965. Fossils of Each Group of China: Chinese Trilobites. Science Press, Beijing. 766 p., 135 pl. (2 vol.) In Chinese. [Family Kueichowiidae]

Öpik, A.A. 1975. Cymbric Vale fauna of New South Wales and Early Cambrian Biostratigraphy. Australian Government Publishing Service, Bureau of Mineral Resources, Geology and Geophysics, Bulletin 159:1-78, 14 fig., 7 pl. [Family Xystriduridae]

Pocock, K.J. 1970. The Emuellidae: a new family of trilobites from the Lower Cambrian of South Australia. Palaeontology 13:522-62, fig. 1-9, pl. 106-10. [Superfamily Emuelloidea, Family Emuellidae]

Pokrovskaya, N.V. 1959. Trilobitovaya fauna i Stratigraphiya Kembrijskikh otlochenij Tuvy [Trilobite fauna and stratigraphy of Cambrian deposits from Tuva]. Akademia Nauk SSSR, Trudy Geologicheskogo Instituta 27:1-199, pl. 1-11.  [Family Menneraspididae]

Poulsen, C. 1927. The Cambrian, Ozarkian and Canadian faunas of northwest Greenland. Meddelelser om Grønland 70:233-343, pl. 14-21.  [Superfamily Redlichioidea, Family Redlichiidae]

Repina, L.N. 1979. Zavisimost morfologicheskikh priznakov ot uslovii obitaniia trilobitov i otsenka ikh znacheniia dlia sistematiki nadsemeistva Olenelloidea [The dependence of morphological features upon the living conditions of trilobites and an evaluation of their importance in the classification of the Superfamily Olenelloidea]. Akademiia Nauk SSSR, Sibirskoe Ordelenie, Trudy Instituta Geologii i Geofizikii 431:11-30, 13 fig., pl. 1-2. [Families Archaeaspididae, Judomiidae]

Richter, R. 1932. Crustacea (Paläotologie) in: R. Dittler. G Joos, E. Korschelt, G. Linek, F, Oltmanns, K. Schaum, eds., Handwörterbuch der Naturwissenschaften, 2nd ed. Gustav Fisher. Jena. p. 840-64, fig.A, 1-64.  [Order Redlichiida, Suborder Redlichiina]

Walcott C.D. 1890. The fauna of the Lower Cambrian or Olenellus zone. In: 10th Annual Report of the Director, 1888-1889, United States Geological Survey. p. 509-774, fig. 44-69, pl. 43-98.  [Suborder Olenellina, Superfamily Olenelloidea, Family Olenellidae]

Whitehouse, F.W. 1939. The Cambrian faunas of north-Eastern Australia. Part 3: The polymerid trilobites (with supplement 1). Memoirs of the Queensland Museum 11(3):179-282, unnumbered figs., pl. 19-25. [Family Metadoxididae]

Zhang, W. & H. Lin, 1980. [Families Redlichinidae, Chengkouaspidae] in: Zhang, W., Y. Lu, Z. Zhu, Y. Qian, H. Lin, Z. Zhou, S. Zhang, & J. Yuan. 1980. Cambrian trilobite faunas of southwestern China. Palaeontologica Sinica 159 (new series B, no. 16):1-497, 105 fig., 134 pl. 



Citations for other orders (revisions in preparation)

CORYNEXOCHIDA:
Kobayashi, T. 1935. The Cambro-Ordovician formations and faunas of south Chosen. Paleontology, Part 3: Cambrian faunas of south Chosen with a special study on the Cambrian trilobite genera and families. Journal of the Faculty of Science, Imperial University of Tokyo, Section II. 4(2):49-344, fig. 1-33, pl. 1-24.

LICHIDA & ODONTOPLEURIDA:
Moore, R.C. 1959. Order Lichida. in: Moore, R.C., ed. 1959. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1. Geological Society of America & University of Kansas Press. Lawrence, Kansas & Boulder, Colorado. xix + 560 pp., 415 figs.

Pollit, J.R., R.A. Fortey & M.A Wills. 2005. Systematics of the Trilobite families Lichidae Hawle & Corda, 1847 and Lichakephalidae Tripp, 1957: The application of Bayesian inference to morphological data. J. Syst. Pal. 3(3):225-41.

Thomas A.T. and D.J. Holloway. 1988. Classification and phylogeny of the trilobite order Lichida. Phil. Trans. Royal Soc. London 321:179-262. 

Whittington, H.B. 2002. Lichidae (Trilobita): Morphology and classification. J. Paleontology 76(2):306-20.

PHACOPIDA:
Salter, J.W. 1864. A Monograph of British Trilobites, Part 1. Palaeontographical Society, London, Monograph, vol. for 1862. p. 1-80, pl. 1-6.

PTYCHOPARIIDA:
Swinnerton, H.H. 1915. Suggestions for a revised classification of trilobites. Geological Magazine (new series) 6(2):487-96, 538-45.

ASAPHIDA:
Fortey, R.A. & B.D.E. Chatterton. 1988. Classification of the trilobite suborder Asaphina. Palaeontology 31:165-222, fig. 1-27, pl. 17-19.

Zhu, X.-J., N.C. Hughes & S.-C. Peng. 2007. On a new species of Shergoldia Zhang & Jell 1987 (Trilobita), the family Tsinaniidae and the order Asaphida. Memoirs of the Association of Australasian Palaeontologists 34:243-53.

PROETIDA:
Fortey, R.A. & R.M. Owens. 1975. Proetida: a new order of trilobites. Fossils and Strata 4:227-39.

HARPETIDA:
Ebach, M.C. & K.J. McNamara. 2002. A systematic revision of the family Harpetidae (Trilobita). Records of the Western Australian Museum 21: 235-67.

TRILOBITA:
Walch, J.E.I. 1771. Die Naturgeschichte der versteinerungen zur erläuterung der Knorrischen Sammlung von Merkwurdigkeiten der Natur. Nürnberg.


Who authored me, I wonder?