Type material of Eryma compressum (Eudes-Deslongchamps, 1842) and of its synonyms. A–B: holotype NHMUK In.22917 from the Bathonian of Ranville (France): general view (A), line drawing (B); C: lectotype GPIT 43/53-5 of Glyphea bedeltum Quenstedt, 1858 from the Bajocian of Balingen (Germany); D: holotype GPIT without number of Glyphea aalensis Quenstedt, 1858 from the Aalenian of Aalen (Germany); E: holotype MNHN.F.A29729 of Bolina etalloni Ferry, 1861 from the Bajocian of Solutré (France); F: holotype GPIT without number of Erymastacus quenstedti Beurlen, 1928 from the Bajocian of Beuren (Germany); G: holotype FSL EM 80059 of Eryma elegans Oppel, 1862 from the Bajocian of Longwy (France); H: holotype MAN 2015.0.228 of Eryma authelini Méchin, 1901 from the Aalenian of Amances (France); I: original figure of Morière (1888: pl. 4, fig. 2) of Eryma bizeti Morière, 1888 from the Bathonian of Ecouché (France). Scale bars: 1 cm. Abbreviations: a branchiocardiac groove; b: antennal groove; b₁: hepatic groove; c: postcervical groove; e₁e: cervical groove; i: inferior groove; PoA: postorbital area; ω: attachement site of mandibular muscle. Photographs: J. Devillez (A, D, F, H), P. Havlik (C), P. loubry (E), N. Robin (G). Line drawing: J. Devillez.