Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
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 Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Species
T. typica (type species)
Synonymy list
Year | Name and author |
---|---|
1951 | Trigonocerca Ross p. 104 |
2002 | Trigonocerca Jell and Adrain p. 455 |
2002 | Trigonocerca Sepkoski |
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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
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Source: f = family, o = order, c = class | |||||
References: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004 |
Age range: base of the Tulean to the top of the Blackhillsian or 480.80000 to 470.00000 Ma
Collections (34 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Ibexian | USA (Nevada) | T. sp. (104537) | |
Tremadoc | Canada (Alberta) | T. sp. (10952) | |
Stairsian - Blackhillsian | USA (California) | T. sp. (104271 196128) | |
Tulean | USA (Nevada) | T. sp. (291 104343 104546) | |
Blackhillsian | USA (Nevada) | T. sp. (77180 104401 104548 104549 104550) T. typica (104551 104571) | |
Blackhillsian | USA (Idaho) | T. typica (103796 103797 103798) | |
Blackhillsian | USA (Utah) | T. sp. (104117 104118) T. typica (69261 103888 103889 104067 104119 104120 104121 104122 104124 104125 104126 104127 104138 104149 105780) |