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Taxonomy
Triarthrus caecigenus was named by Raymond (1920). Its type specimen is MCZ 1593, an exoskeleton, and it is a 3D body fossil.
It was recombined as Porterfieldia caecigenus by Cooper (1953); it was recombined as Porterfieldia caecigena by Tripp (1980).
It was recombined as Porterfieldia caecigenus by Cooper (1953); it was recombined as Porterfieldia caecigena by Tripp (1980).
Synonyms
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Synonymy list
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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.
†Porterfieldia caecigena Raymond 1920
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Invalid names: Triarthrus reedi Raymond 1925 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009, Whittington et al. 1997 | |||||
Age range: base of the Burrellian to the top of the Longvillian or 456.60000 to 455.00000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sandbian | United Kingdom (Scotland) | Porterfieldia caecigena (208115 208116 208120 208121) | |
| Longvillian | Ireland (Lenister) | Porterfieldia caecigenus (55714) | |
| Burrellian | United Kingdom (Scotland) | Triarthrus reedi (165043 192745) |