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Trigonocerca

Trilobita - Asaphida - Asaphidae

Taxonomy
Trigonocerca was named by Ross (1951) [Sepkoski's age data: O Trem-u O Aren-l Sepkoski's reference number: 795]. Its type is Trigonocerca typica.

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

Synonymy list
YearName and author
1951Trigonocerca Ross, Jr. p. 104
2002Trigonocerca Jell and Adrain p. 455
2002Trigonocerca Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAsaphidaSalter 1864
superfamilyAsaphoideaSalter 1864
familyAsaphidaeBurmeister 1843
genusTrigonocerca

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.

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-movingo
Life habit: low-level epifaunalo
Diet: deposit feedero
Vision: well-developedf
Created: 2009-06-11 14:38:06
Modified: 2009-12-14 00:45:08
Source: f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy 2009, Hendy et al. 2009

Age range: base of the Blackhillsian to the top of the Tremadoc or 478.60000 to 477.70000 Ma

Collections (34 total)


Time interval Ma Country or state Original ID and collection number
Ibexian488.3 - 471.8USA (Nevada) T. sp. (104537)
Tremadoc485.4 - 477.7Canada (Alberta) T. sp. (10952)
Stairsian - Blackhillsian485.4 - 471.8USA (Nevada) T. sp. (104271)
Stairsian - Blackhillsian485.4 - 471.8USA (California) T. sp. (196128)
Tulean485.4 - 471.8USA (Nevada) T. sp. (291 104343 104546)
Blackhillsian478.6 - 471.8USA (Nevada) T. sp. (77180 104401 104548 104549 104550) T. typica (104551 104571)
Blackhillsian478.6 - 471.8USA (Utah) T. sp. (104117 104118) T. typica (69261 103888 103889 104067 104119 104120 104121 104122 104124 104125 104126 104127 104138 104149 105780)
Blackhillsian478.6 - 471.8USA (Idaho) T. typica (103796 103797 103798)