http://eprints.zu.edu.ua/8206/ The variability of exoskeleton elements in polyplacocystis ambigua (protista, centrohelida) Гапонова, Л. П. Dovgal, I. V. QL Zoology 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. 2008 Article PeerReviewed text uk http://eprints.zu.edu.ua/8206/1/12.pdf Гапонова, Л. П. and Dovgal, I. V. (2008) The variability of exoskeleton elements in polyplacocystis ambigua (protista, centrohelida). Vestnik zoologii (42 (5)). pp. 79-83. english