WILLIAMS, David M., Pat A. SIMS, & Jakub WITKOWSKI 2023 (May 5) Notes on the rare Cretaceous species Syndetocystis uralensis Strelnikova leading to the description of a new monotypic genus Monoportula P.A.Sims et D.M.Williams nov. gen. Phytotaxa 595(2): 219-224, 9 figs., 1 table |