- acritarchous
- акритарховый
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
acritarch — acritarchous, adj. /ak ri tahrk /, n. Paleontol. any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition. [1963; < NL Acritarcha (neut. pl.), irreg. < Gk ákrit(os)… … Universalium