Figure 8

Figure 8 — Sutures and septa of some ammonoids (modified after Klug & Hoffmann 2015: fig. 3.1). A, Agoniatites vanuxemi (Hall, 1879), latest Eifelian, Jebel Amessoui, Tafilalt, Morocco; Institut für Geowissenschaften (Tübingen, Germany); diameter 15 centimetres. B, Goniatites multiliratus Gordon, 1862, middle Mississippian, Jackfork Creek, S of Ada, Oklahoma (USA); PIMUZ 31257 (Paläontologisches Institut und Museum, Universität Zürich, Switzerland); diameter 43 millimetres. C, Amphipopanoceras cf. medium (McLearn 1948), SGPIMH no. 3181 (Universität Hamburg, Germany), Triassic, Spitsbergen, Norway; diameter 25 millimetres; acid-prepared specimen with phosphatized septa and siphuncle; from Weitschat (1986). D, Lytoceras sp., Aalenian (Jurassic), Heiningen near Göppingen, Germany, whorl height 84 millimetres, Staatliches Museum für Naturkunde Stuttgart, Germany, SMNS 23156 (after Ernst and Klug 2011).

Figure 8 — Sutures and septa of some ammonoids (modified after Klug & Hoffmann 2015: fig. 3.1). A, Agoniatites vanuxemi (Hall, 1879), latest Eifelian, Jebel Amessoui, Tafilalt, Morocco; Institut für Geowissenschaften (Tübingen, Germany); diameter 15 centimetres. B, Goniatites multiliratus Gordon, 1862, middle Mississippian, Jackfork Creek, S of Ada, Oklahoma (USA); PIMUZ 31257 (Paläontologisches Institut und Museum, Universität Zürich, Switzerland); diameter 43 millimetres. C, Amphipopanoceras cf. medium (McLearn 1948), SGPIMH no. 3181 (Universität Hamburg, Germany), Triassic, Spitsbergen, Norway; diameter 25 millimetres; acid-prepared specimen with phosphatized septa and siphuncle; from Weitschat (1986). D, Lytoceras sp., Aalenian (Jurassic), Heiningen near Göppingen, Germany, whorl height 84 millimetres, Staatliches Museum für Naturkunde Stuttgart, Germany, SMNS 23156 (after Ernst and Klug 2011).