Bohemograptus papilio sp. nov. three-dimensionally preserved monograptid (Graptolithina) with an adaptation to retard sinking, from the Upper Silurian Poland
Keywords: لهستان; Silurian; Ludlow; Poland; Graptolithina; Bohemograptus; Plankton; Sinking prevention; PatagiumSilurien; Ludlow; Pologne; Graptolithina; Bohemograptus; Plancton; Prévention à l’enfouissement; PatagiumZPAL G, number of collection