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Tretaspis ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4635607	https://www.gbif.org/species/4635607
PaleoBioDB ID (PBDB)	20217	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=20217

Rank

genus

Taxonomy (GBIF,PBDB)

Life : Animalia : Arthropoda : Trilobita : Asaphida : Trinucleidae : Tretaspis

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Bilateria
-	Eubilateria	Ax 1987
-	Protostomia	Grobben 1908
-	Ecdysozoa
-	Panarthropoda
phylum	Arthropoda	Latreille 1829
subphylum	Mandibulata
class	Trilobita	Walch 1771
order	Asaphida	Salter 1864
superfamily	Trinucleoidea	Hawle and Corda 1847
family	Trinucleidae	Hawle and Corda 1847
subfamily	Trinucleinae	Hawle and Corda 1847
genus	Tretaspis	McCoy 1849

Scientific Name

Tretaspis McCoy, 1849

Name Published In

Ann. Mag. nat. Hist., (2)4: 410 (conserved under the plenary power)

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Tretaspis	genus	belongs to Trinucleinae	stated with evidence	Owen, 1980
Tretaspis	genus	belongs to Asaphida	second hand	Sepkoski, 2002
Tretaspis	genus	belongs to Trinucleidae	stated without evidence	Jell and Adrain, 2002

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

461 - 458 Ma
Ordovician

Last Recorded Appearance

445 - 433 Ma
Paleozoic

Environment

marine (based on Trilobita)

Motility

fast-moving (based on Asaphida)

Vision

limited

Diet

suspension feeder (based on Trinucleidae)

Ontogeny

molting,addition of parts (based on Trilobita)

Ecospace Comments

BODY SIZE: Data from Harrington et al. (1959).

Taphonomy

minor spines

Primary Reference (PBDB)

J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Tretaspis anderssoni ✝ species	accepted (GBIF) listed (PBDB)		5	456 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Tretaspis askerensis ✝ species	accepted (GBIF) listed (PBDB)		8	456 Ma Late/Upper Ordovician	445 Ma Late/Upper Ordovician
Tretaspis ceriodes ✝ species	accepted (GBIF) listed (PBDB)		18	461 Ma Middle Ordovician	450 Ma Late/Upper Ordovician
Tretaspis clarkei species	accepted (GBIF)	No associated record in PBDB
Tretaspis elevata species	accepted (GBIF)	No associated record in PBDB
Tretaspis hadelandica ✝ species	accepted (GBIF) listed (PBDB)		15	456 Ma Late/Upper Ordovician	452 Ma Late/Upper Ordovician
Tretaspis hisingeri ✝ species	accepted (GBIF) listed (PBDB)		9	456 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Tretaspis kiaeri ✝ species	accepted (GBIF) listed (PBDB)		33	458 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Tretaspis latilimbus ✝ species	accepted (GBIF) listed (PBDB)		12	456 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Tretaspis moeldenensis ✝ species	accepted (GBIF) listed (PBDB)		2	450 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician
Tretaspis sagenosus ✝ species	accepted (GBIF) listed (PBDB)		6	461 Ma Middle Ordovician	461 Ma Middle Ordovician
Tretaspis seticornis ✝ species	accepted (GBIF) listed (PBDB)		13	461 Ma Middle Ordovician	445 Ma Late/Upper Ordovician
Tretaspis sortita ✝ species	accepted (GBIF) listed (PBDB)		7	456 Ma Late/Upper Ordovician	450 Ma Late/Upper Ordovician

Synonymy List

Year	Name and Author
1849	Tretaspis McCoy p. 410
1980	Tretaspis Owen
2002	Tretaspis Jell and Adrain p. 454
2002	Tretaspis Sepkoski, Jr.

References

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

McCoy F. On the classification of some British fossil Crustacea with notices of new forms in the university collection at Cambridge, Annals and Magazine of Natural History 2 4, 161-414

Owen A. W. (1980) The trilobite Tretaspis from the upper Ordovician of the Oslo region, Norway, Palaeontology 23 4, 715-747

Jell P. A., Adrain J. M. (2002) Available generic names for trilobites, Memoirs of the Queensland Museum 48 2, 331-553

International Commission on Zoological Nomenclature. Opinion 505 Validation under the Plenary Powers of the generic names Trinucleus Murchison, 1839 and Tretaspis M C Coy, 1849 (class Trilobita).Opinions and declarations rendered by the International Commission on Zoological Nomenclature 18(8), 157-176 (1958) - via Official Lists and Indexes of Names in Zoology

Museum Victoria KEmu database (Oct 2006) - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus (authority adjusted) - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera

extinct group - via The Interim Register of Marine and Nonmarine Genera

Ann. Mag. Nat. Hist., (2) 4 - via The Interim Register of Marine and Nonmarine Genera

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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