Ammonites and stratigraphy of the Achdorf Formation (Braunjura Group; Aalenian) at the Wochenberg hill near Schömberg-Schörzingen (W Swabian Alb, SW Germany)

(1a–6b) Staufenia discoidea (Quenstedt) α. (1) [M], SMNS 70640/27, (2) [m], SMNS 70640/28, (3) [m], SMNS 70640/29, (4) [m], SMNS 70640/30, (5) [M], SMNS 70640/31. (6) Lectotype of Ammonites discoideus Quenstedt, 1886, pl. 58, fig. 3, SMNS 70640/32 [plaster cast; original in the Paläontologische Sammlung der Universität Tübingen (formerly: Geologisch-Paläontologisches Institut der Universität Tübingen), GPIT-PV-61330], Schörzingen [= Wochenberg]. 1a–5: St-B 6, southern slope of the Wochenberg hill. 6: St-B 6–8b. 1a–6b: southern slope of the Wochenberg hill, Achdorf Formation, Staufensis-Bank, Upper Aalenian, Murchisonae Zone (Murchisonae Subzone), discoidea α biohorizon. Asterisk marks beginning of bodychamber. Scale bar: 3 cm.