Traits taxon details
original description
Kolata, D. R. 1975. Middle Ordovician echinoderms from Northern Illinois and Southern Wisconsin. Journal of Paleontology - The Palaeontological Society Memoir 7, 1-74. page(s): 66-68; text-figs. 18-19, pl. 14: figs 1-2 [details]
basis of record
Kroh, A. 2010. Index of Living and Fossil Echinoids 1971-2008. Annalen des Naturhistorischen Museums in Wien, Serie A 112, 195-470., available online at http://verlag.nhm-wien.ac.at/pdfs/112A_195470_Kroh.pdf page(s): 205 [details]
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