Tzankov, V. 1982. Les fossiles de Bulgarie. Va. Crétacé Supérieur: Cephalopoda (Nautiloidea, Ammonoidea) et Echinodermata (Echinoidea). Académie Bulgare des Sciences, Sofia, 136 pp. page(s): 76-77; pl. 31: figs 6, 6a-b [details]
Note Choumen, Bulgaria, HT: USC CR2 1279
From editor or global species database
Type locality Choumen, Bulgaria [details]Type material HT: USC CR2 1279 [details]
original descriptionTzankov, V. 1982. Les fossiles de Bulgarie. Va. Crétacé Supérieur: Cephalopoda (Nautiloidea, Ammonoidea) et Echinodermata (Echinoidea). Académie Bulgare des Sciences, Sofia, 136 pp. page(s): 76-77; pl. 31: figs 6, 6a-b [details]