Colpaert CPA-M, Leonidovich Nikitenko B. <em>Pseudolamarckina pseudorjasanensis </em>Dain, 1967 (Foraminifera) as a Kimmeridgian marker species and its significance for biostratigraphy, palaeoecology and palaeobiogeography. POLAR [Internet]. 2019Mar.5 [cited 2024Nov.27];380. Available from: https://polarresearch.net/index.php/polar/article/view/3461