Shevchuk, O. and Ivanchenko, K. 2021. Acritarchs of the Mesozoic of Ukraine. Visnyk of V. N. Karazin Kharkiv National University, series "Geology. Geography. Ecology". 55 (Dec. 2021), 107-116. DOI:https://doi.org/10.26565/2410-7360-2021-55-08.