Skip to main content
Fig. 11 | Swiss Journal of Palaeontology

Fig. 11

From: Ontogeny and morphology of the retrochoanitic septal necks of Agoniatites vanuxemi from the Middle Devonian Cherry Valley Limestone

Fig. 11

Morphogenetic model showing successive development of the retrochoanitic septal neck of A. vanuxemi (a–f). See text for details. C cameral membranes, ep septal epithelium, SC siphuncular cord, ST siphuncular tube, aux auxiliary deposits, SP septum, SN septal neck, VW ventral shell wall, arrow indicates the adoral direction. Modified from Tanabe and Landman (1996, fig. 11A)

Back to article page