Echinoidea taxon details
original description
Kroh, A., Lukeneder, A. & Gallemí, J. 2014. Absurdaster, a new genus of basal atelostomate from the Early Cretaceous of Europe and its phylogenetic position. Cretaceous Research 48, 235–249., available online at https://doi.org/10.1016/j.cretres.2013.11.013 page(s): 237-242 [details]
From editor or global species database
Diagnosis Collyritid with highly modified, disjunct apical disc in which only genital plate 2 is retained and forms a bilaterally symmetrical madreporite located along midline of test. Multiple genital pores located on the most adapical interambulacral plates may be present. Ambulacrum III sunken at the ambitus and differentiated from the paired ambulacra. Periproct located low on ambitus on a small, sharply defined, vertically truncated posterior face. [details]
Etymology Referring to the puzzling morphology exhibited by the type-species. [details]
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