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Brangema Nicolleau & Vadet, 1995

Diagnostic Features	Test small (10 mm), slightly flattened above and below apial disc large; plating lost interambulacral plates with single primary tubercle and very few secondary tubercles ambulacral tubercles much smaller than interambulacral tubercles ambulacral plating style unknown; 3 to 4 pores per primary tubercle. Ambulacral pores uniserially arranged throughout primary tubercles reportedly noncrenulate and imperforate weak buccal notches present
Distribution	Upper Jurassic (Oxfordian), France
Name gender	feminine
Type	Brangema brangeri Nicolleau & Vadet, 1995, p. 77, by original designation.
Species Included	Only the type species.
Classification and/or Status	Acroechinoidea incertis sedis Poorly known
Remarks	Originally assigned to the Diadematoida by  Nicolleau & Vadet (1995, p. 77).  However, attribution to the Diadematoida seems improbable due to the reportedly imperforate primary tubercles. Without knowledge of the ambulacral structure this taxon is impossible to place. An attribution to the basal Arbacioida, however, seems more likely that to the Diadematoida (similar forms occur in the Glyphocyphidae, e.g. Pleurodiadema). Nicolleau, P. & Vadet, A. 1995. Les oursins des Marnes Spongiaires de l'Oxfordien du Poitou. In: Branger, P., Nicolleau, P. & Vadet, A. (eds): Les ammonites et les oursins de l'Oxfordien du Poitou.(facies  spongiaires de l'Oxfordien moyen et superieur) pp. 55-81, 6 pls., 30 figs., 1 tab., Aiffres (Musees de la ville de Niort & A.P.G.P.Poitou - Charentes - Vendee).