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Brachyhipposiderus

Trilobita - Harpetida - Harpetidae

Taxonomy
Brachyhipposiderus was named by Jell (1985) [Sepkoski Compendium: O (Trem-l) - O (Trem-u) Ref #927]. Its type is Brachyhipposiderus logimus.

It was assigned to Ptychopariida by Sepkoski (2002); and to Harpetidae by Jell (1985), Ebach and McNamara (2002) and Jell and Adrain (2003).

Synonymy list
YearName and author
1985Brachyhipposiderus Jell p. 71
2002Brachyhipposiderus Ebach and McNamara
2002Brachyhipposiderus Sepkoski, Jr.
2003Brachyhipposiderus Jell and Adrain p. 351

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumMandibulata
classTrilobitaWalch 1771
orderHarpetidaWhittington 1959
familyHarpetidaeHawle and Corda 1847
genusBrachyhipposiderus

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
ReferenceDiagnosis
P. A. Jell 1985Cephalon sub-semicircular; lp furrow well impressed; alae distinct but low; occipital tubercle prominent; radial anastamosing caecal network on cheeks and brim with moderately large pits between caeca on brim gradually decreasing towards glabella; brim prolonged only a very short distance behind posterior of occipital ring, markedly concave posterolateral^ long genal spine at rear of prolongation; girder prominent, extending to tip of prolongation; check roll widened at level of posterior border furrow, extending adaxially almost as far as exsagitlal line of outer edge of eye tubercle.