%0 Journal Article %@ 2073-2333 %A Gaponova, L. P. %A Dovgal, I. V. %D 2008 %F zu2:8206 %I Kiev: I.I. Schmalhausen Institute of Zoology %J Vestnik Zoologii %K variation, periplast scales, Polyplacocystis, Centrohelida, Protista. %N 42 (5) %P 461-465 %T The Variability of Exoskeleton Elements in Polyplacocystis Ambigua (Protista, Centrohelida) %U http://eprints.zu.edu.ua/8206/ %X Article dealt with the investigation of variability of the scales of periplast in Polyplacocystis ambigua (Penard, 1904). New quantative character of periplast scale (wide of rim) was introduced. Renewed diagnosis of P. ambigua where the quantative characteristics of perilpast scales are taken into account is given.