original description
Tzankov, V. 1934. Échinides fossiles de la Craie supérieur de Bulgarie de Nord. Annuaire del'Université de Sofia 30, 189-233.
page(s): 200-201, 217-218; pl. 2: figs. 1a-b [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): 77 [details] Available for editors
From editor or global species database
Distribution Bulgaria [details]
Fossil Range Maastrichtian, Late Cretaceous [details]