Traits taxon details
original description
Thomas, A. O. 1924. Echinoderms of the Iowa Devonian. Iowa Geological Survey, Annual Reports 1919-1920 29, 385-552. page(s): 500-505; pl. 50: fig. 36, pl. 51: figs. 1-26, pl. 52: figs. 1-4, pl. 53: figs. 1-7, pl. 54: figs. 1-6 [details]
basis of record
Kier, P. M. & Lawson, M. H. 1978. Index of living and fossil echinoids 1924-1970. Smithsonian Contributions to Paleobiology 34, 1-182., available online at https://doi.org/10.5479/si.00810266.34.1 page(s): 4 [details] Available for editors
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