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Psephosthenaspis

Trilobita - Proetida - Bathyuridae

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).

Synonyms
Synonymy list
YearName and author
1953Psephosthenaspis Whittington
1991Ludvigsenella Tremblay and Westrop
2002Psephosthenaspis Jell and Adrain p. 432
2002Psephosthenaspis Sepkoski
2012Psephosthenaspis Adrain and McAdams

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
familyBathyuridaeWalcott 1886
genusPsephosthenaspisWhittington 1953

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