Fig. 2

Embryonic and juvenile shell of Peismoceras asperum (Barrande, 1865), Ludlow, Gorstian, lower scanicus-chimaera Biozone, Kopanina Formation, Bohemia, Praha-Řeporyje, road cut section. Scale bar 1 mm. a, g NM-L 46909, lateral view, early shell (a) and complete shell (g), dotted line indicates partly broken off part of phragmocone with calcite infilling. b, d NM-L 46911 ventral and lateral views. c, f NM-L 46908, lateral view, early shell (c) and complete shell (g). e NM-L 46910, lateral view. Scale bars: a, c (1 mm), b, d–g (5 mm). ar anomalous rib, fw end of first whorl on dorsal side, gr growth ridges, hi healed shell injury, ill intercalation of longitudinal lirae, s siphuncle; for others abbreviations see Fig. 1