Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Triarthrus fischeri was named by Billings (1865) [Lectotype selected by Whittington 1965. Paralectotypes: GSC 678a, b, c-i]. Its type specimen is GSC 678c (lectotype), a cephalon/head (cranidium), and it is a 3D body fossil.
It was recombined as Porterfieldia fischeri by Ludvigsen and Tuffnell (1983).
It was recombined as Porterfieldia fischeri by Ludvigsen and Tuffnell (1983).
Synonymy list
Year | Name and author |
---|---|
1865 | Triarthrus fischeri Billings p. 291 |
1925 | Triarthrus fischeri Raymond pp. 51 - 52 |
1983 | Porterfieldia fischeri Ludvigsen and Tuffnell p. 573 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Porterfieldia fischeri Billings 1865
show all | hide all
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
Source: g = genus, f = family, c = class | |||||
References: Hendy 2009, Whittington et al. 1997, Aberhan et al. 2004 |
Age range: Whiterockian or 471.30000 to 457.30000 Ma
Collections (14 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Chazyan | Canada (Newfoundland and Labrador) | Triarthrus fischeri (104807 104861) | |
Whiterockian | Canada (Newfoundland and Labrador) | Triarthrus fischeri (104809 104810 104811 104813 104817 104855 104856 104862 104867 104868) Triarthrus fisheri (104857 104864) |