original description
Poretskaya, E. S. 1968a. Polyplacidia artenica-a New Genus ans species of Sea Urchin from South Western Armenia.Ezhegodnik. Vsesouznoe Paleontologicheskoe Obschchestvo 18, 286-297.
page(s): 290-293; figs. 1-6, pl. 1: figs, 1a-b, pl. 2: figs. 1a-c [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): 32 [details] Available for editors
From editor or global species database
Distribution Armenia, U.S.S.R. [details]
Fossil Range Eocene [details]