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Psephosthenaspis
Taxonomy
Psephosthenaspis was named by Whittington (1953) [Sepkoski's age data: O Llvi-l]. Its type is Bathyurellus strenuus.
It was assigned to Proetida by Sepkoski (2002); and to Bathyuridae by Jell and Adrain (2002) and Adrain and McAdams (2012).
It was assigned to Proetida by Sepkoski (2002); and to Bathyuridae by Jell and Adrain (2002) and Adrain and McAdams (2012).
Synonyms
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Synonymy list
Year | Name and author |
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1953 | Psephosthenaspis Whittington |
1991 | Ludvigsenella Tremblay and Westrop |
2002 | Psephosthenaspis Jell and Adrain p. 432 |
2002 | Psephosthenaspis Sepkoski |
2012 | Psephosthenaspis Adrain and McAdams |
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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.
G. †Psephosthenaspis Whittington 1953
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†Psephosthenaspis ellipsepyga Tremblay and Westrop 1991
†Psephosthenaspis glabrior Fortey and Droser 1996
†Psephosthenaspis microspinosa Fortey and Droser 1996
†Psephosthenaspis pseudobathyurus Ross and Barnes 1967
†Psephosthenaspis strenuus Billings 1865
Invalid names: Ludvigsenella Tremblay and Westrop 1991 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: g = genus, f = family, o = order, c = class | |||||
References: Hendy 2009, Whittington et al. 1997, Fortey and Owens 1999, Aberhan et al. 2004 |
Age range: Rangerian or 471.80000 to 468.10000 Ma
Collections (38 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Rangerian | USA (Nevada) | P. glabrior (37491) P. pseudobathyurus (37485) | |
Rangerian | USA (Utah) | Acidiphorus pseudobathyurus (104061) P. glabrior (37462 37463 37464 37465 37477) P. microspinosa (37452 37453) P. pseudobathyurus (37454 37455 37456 37457 37458 37460 37461 37470 37471 37472 37473 37474 37475 37476) | |
Whiterockian | USA (Nevada) | Goniotelina sp. (104523) P. glabrior (37481 37482 37492) P. pseudobathyurus (37480 37484 37486 37488 37489) | |
Whiterockian | Canada (Northwest Territories) | Ludvigsenella ellipsepyga (102258 102259 102262 102265 102480) |