Eryma mandelslohi (Meyer, 1840b) from the Callovian. A–C: cast of the holotype NMB 4881 from Metzingen (Germany): left lateral view (A), right lateral view (B), schema (C); D: specimen GPIT Ar 1294/2; E: syntype SMNS 29680 of Eryma curva Beurlen, 1928 from Reutlingen (Germany); F, syntype SMNS 29684 of Eryma orthodactylus Beurlen, 1928 from Ursulaberg hill near Reutlingen (Germany); G: original figure of Lahusen (1894: pl. 1, fig. 1) of Eryma karitzkyi Lahusen, 1894 from Kanev (Ukraine); H: specimen BSPG AS VIII 113 from Metzingen (Germany). Scale bars: 1 cm. Abbreviations: a: branchiocardiac; b: antennal groove; b₁: hepatic groove; c: postcervical; d: gastro-orbital groove; e₁e: cervical groove; PoA: postorbital area; ω: attachement site of mandibular muscle. Photographs: J. Devillez. Line drawing: J. Devillez.