Early Permian crinoids from Laurasia and their paleogeographic implications Author Ausich, William I. Author Križnar, Matija Author Paszcza, Karolina Author Hoşgör, İzzet Author Płachno, Bartosz J. Author Salamon, Mariusz A. text Acta Palaeontologica Polonica 2024 2024-09-27 69 3 447 466 https://doi.org/10.4202/app.01159.2024 journal article 10.4202/app.01159.2024 1732-2421 16954222 Parastachyocrinus malaianus ( Wanner, 1924 ) 1924 Erisocrinus malaianus sp. nov. “Exemplar a”; Wanner, 1924: 291 , pl. 18, figs. 25–27. 1943 Erisocrinus malaianus Wanner, 1924 , in part; Bassler and Moodey 1943: 459 . 1948 Erisocrinus malaianus , Wanner, 1924 , in part; Branson 1948: 192 . 1949 Parastachyocrinus malaianus , ( Wanner, 1924 ) , in part; Wanner 1949: 44 . 1973 Parastachyocrinus malaianus , ( Wanner, 1924 ) , in part; Webster 1973: 195 . 1978 Parastachyocrinus malaianus , ( Wanner, 1924 ) , in part; Moore et al. 1978: T720, fig. 475.1. 2014 Parastachyocrinus malaianus ( Wanner, 1924 ) , in part; Webster and Webster 2014: 2014. Holotype : RGM .873646, illustrated by Wanner (1924 : pl. 18: 25–27. Type locality : Basleo , West Timor. Type horizon : Permian (uncertain series). Emended diagnosis. —Aboral cup symmetrical, aboral cup shape very low bowl, subcircular aboral cup shape in basal view, smooth aboral cup plate sculpturing, aboral cup plate sutures strongly impressed, basal concavity present, infrabasal plates not confined to basal concavity, infrabasal plates not visible in lateral view, basal plates strongly convex, spines or nodes present or absent on basal plates, radial plates strongly convex, spines or nodes present or absent on basal plates. Stratigraphic and geographic range. —Unknown series of Permian, Timor.