† Toernquistiidae


Additional Functions


Belong­ing to

Gaeabionta  ⇒ Domäne: Eukaryota  ⇒ Reich: Animalia  ⇒ Mittelreich: Eumetazoa  ⇒ Klade: Triploblastica  ⇒ Unterreich: Bilateria  ⇒ Klade: Eubilateria  ⇒ Abzweig: Protostomia  ⇒ Infrareich: Ecdysozoa  ⇒ Superstamm: Panarthropoda  ⇒ Stamm: Arthropoda  ⇒ Unterstamm: Mandibulata  ⇒ Klasse: Trilobita  ⇒ Ordnung: Proetida  ⇒ Unterordnung: Proetina  ⇒ Superfamilie: Bathyuroidea

Taxo­nomic seg­ment


This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.

Name from

Corre­spond­ing author (Name, Year)

Hupé, 1953

Other languages



Lebenszeitraum in Million Jahren (Ma)

Start age: 478.6 Ma - End age: 443.4 Ma
Upper Ordovician
(Oberes Ordovizium)
Middle Ordovician
(Mittleres Ordovizium)
Lower Ordovician
(Unteres Ordovizium)

Additional data by PBDB, License: CC BY

Motility: fast-moving
Environment: marine

deposit feeder

Compositon of the remains:

low Mg Calcite, Chitin

Reference- and Source indication, Literature

On the same taxonomic level (siblings) (Count: 6)

Taxonomic assignment (0)

References by PBDB, License: CC BY

  • R. A. Fortey, 2013 - Lower Ordovician trilobites of the Kirtonryggen Formation, Spitsbergen - Fossils and Strata (59), 1-116 (journal article, English)
  • N. E. B. McAdams, 2009 - Heckethornia, a new genus of dimeropygid trilobites from the Lower Ordovician (Ibexian; Tulean and Blackhillsian) of the Great Basin, western USA - Canadian Journal of Earth Sciences (46), 875-914 (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)
  • J. D. Loch, 2007 - Trilobite biostratigraphy and correlation of the Kindblade Formation (Lower Ordovician) of Carter and Kiowa Counties, Oklahoma - Oklahoma Geological Survey Bulletin (149), 1-154 (serial monograph, English)
  • J. M. Adrain, 2006 - New genus of dimeropygid trilobites from the earliest Ordovician of Laurentia - Acta Palaeontologica Polonica (51), 541-550 (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)
  • P. A. Jell, 2002 - Available generic names for trilobites - Memoirs of the Queensland Museum (48), 331-553 (journal article, English)
  • J. M. Adrain, 2001 - Systematics of the Ordovician trilobites Ischyrotoma and Dimeropygiella, with species from the Type Ibexian area, western U.S.A. - Journal of Paleontology (75), 947-971 (journal article, English)
  • R. A. Fortey, 1999 - Trilobites from the Base of the Type Whiterockian (Middle Ordovician) in Nevada - Journal of Paleontology (73), 182-201 (journal article, English)
  • B.D.E. Chatterton, 1998 - Ontogeny and systematics of Toernquistiidae (Trilobita, Proetida) from the Ordovician of the Argentine Precordillera - Journal of Paleontology (72), 273-303 (journal article, English)
  • B.D.E. Chatterton, 1994 - Ordovician proetide trilobite Dimeropyge, with a new species from northwestern Canada - Journal of Paleontology (68), 541-556 (journal article, English)
  • W. D. Boyce, 1989 - Early Ordovician trilobite faunas of the Boat Harbour and Catoche Formations (St. George Group) in the Boat-Harbour-Cape Norman area, Great Northern Peninsula, western Newfoundland - Geological Survey Branch, Department of Mines and Energy, Newfoundland and Labrador, Report 89-2 (), 1-168 (serial monograph, 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)
  • A. W. Owen, 1980 - Late Caradoc-early Ashgill trilobites of the central Oslo Region, Norway - Paleontological Contributions from the University of Oslo. No. 245 (245), 1-63 (journal article, English)
  • R. P. Tripp, 1980 - Trilobites from the Ordovician Balclatchie and lower Ardwell groups of the Girvan district, Scotland - Transactions of the Royal Society of Edinburgh (71), 123-145 (journal article, 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)
  • R. A. Fortey, 1979 - Early Ordovician trilobites from the Catoche Formation (St. George Group), western Newfoundland - Geological Survey of Canada Bulletin (321), 61-114 (serial monograph, English)
  • G. E. Young, 1973 - An Ordovician (Arenigian) trilobite faunule of great diversity from the Ibex area, western Utah - Brigham Young University Geology Studies (20), 91-115 (journal article, 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)
  • 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)
  • 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)
  • H. B. Whittington, 1953 - Silicified Middle Ordovician trilobites - Geological Society of America Memoir (59), 1-139 (serial monograph, English)
  • R. J. Ross, Jr., 1953 - Additional Garden City (Early Ordovician) trilobites - Journal of Paleontology (27), 633-646 (journal article, English)
  • L. F. Hintze, 1952 - Lower Ordovician trilobites from western Utah and eastern Nevadea - Utah Geological and Mineralogical Survey Bulletin (48), 249 p- (serial monograph, 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)
  • J. H. Bradley, 1930 - The fauna of the Kimmswick limestone of Missouri and Illinois - Contributions from the Walker Museum, University of Chicago (2), 219-290 (journal article, English)