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Trinucleus

Artiopoda - Trinucleida - Trinucleidae

Taxonomy
Trinucleus was named by Murchison (1839) [Sepkoski's age data: O Llvi-l O Llde-u Sepkoski's reference number: 795]. It is not extant.

It was assigned to Trinucleidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).

Synonyms
Synonymy list
YearName and author
1839Trinucleus Murchison
1950Edgellia Shaw
2002Trinucleus Jell and Adrain p. 455
2002Trinucleus Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
classTrilobitaWalch 1771
subclassLibristoma
orderTrinucleida(Swinnerton 1915)
familyTrinucleidaeHawle and Corda 1847
genusTrinucleusMurchison 1839

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Trinucleus Murchison 1839
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†Trinucleus acervulosus Raymond 1920
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Invalid names: Trinucleus acervulosus Raymond 1925 [synonym]
†Trinucleus conollyi Fortey 2006
†Trinucleus seticornis Hisinger 1840
Invalid names: Edgellia Shaw 1950 [objective synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: suspension feederf
Vision: blindg
Created: 2010-01-23 05:22:46
Modified: 2010-01-23 07:22:46
Source: g = genus, f = family, c = class
References: Whittington et al. 1997, Aberhan et al. 2004, Hendy 2009

Age range: base of the Kunda to the top of the Uhaku or 469.10000 to 458.00000 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Arenig477.1 - 468.0Bolivia (Tarija) T. sp. (9107)
Arenig477.1 - 468.0Bolivia (Avilés) T. sp. (9104)
Kunda - Uhaku469.1 - 458.0Norway (Sandsvær - Eiker) T. foveolatus (194766)
Early/Lower Llanvirn468.0 - 461.1Argentina (Jujuy) T. sp. (8778)
Early/Lower Llanvirn468.0 - 461.1United Kingdom T. acutofinalis (69850)
Late/Upper Llanvirn461.1 - 458.2United Kingdom T. acutofinalis (69869)
Llandeilo461.1 - 458.2Sweden (Vastergotland) T. foveolatus (77097) T. sp. (77098)
Dobrotivian - Berounian461.0 - 450.1France T. sp. (20846 20850)
Costonian - Harnagian458.2 - 457.2United Kingdom (Wales) T. conollyi (216443)
Sandbian458.2 - 452.8United Kingdom (Wales) T. sp. (120626)