title: Acritarchs of the Mesozoic of Ukraine
abstract: Introduction. Acritarchs are one of the orthostratigraphic groups of microfossils that are widely used in Proterozoic and Paleozoic biostratigraphy. In the Mesozoic period there is a decrease in this group, and this is due to certain reasons. Formulation of the problem. Acritarchs are studied by palynologists from samples of Mesozoic sediments in combination with other representatives of organic bone microplankton, primarily with dinocysts. In the practice of Ukrainian micropaleontologists, the 
journal: Visnyk of V N Karazin Kharkiv National University series Geology Geography Ecology