Mantle Myoadhesive Band

The phosphatic surface in the posterior end of the body chamber in specimen MHI 1856 shows the partially well-preserved attachment scar of the mantle myoadhesive band (corresponding to the "anterior band scar" in Isaji et al., 2002) at the anterior edge of the subcircular to bean-shaped attachment area of the cephalic retractor on the right side (Fig. 10.2). This structure was called "functional area of origin of retractor muscles (conchial zone I)" by Mutvei (1957: 225, Fig. 10.3; = "large scar" in Isaji et al., 2002). The scar of the mantle myoadhesive band is conspicuous ventral and dorsal of the large scar; anterior to the large scar, its course can be reconstructed only roughly.

Fig. 10.2 Line drawing of the posterior part of the body chamber of Ceratites philippii philippii Riedel, 1916, MHI 1856, col. H. Hagdorn, 4-8 m below the Spiriferina-bed, pulcher to robustus Zone, Upper Muschelkalk, late Illyrian, late Anisian, Middle Triassic, Schön and Hippelein quarry at Neidenfels near Crailsheim, Germany (see Fig. 1). x 3.

Fig. 10.2 Line drawing of the posterior part of the body chamber of Ceratites philippii philippii Riedel, 1916, MHI 1856, col. H. Hagdorn, 4-8 m below the Spiriferina-bed, pulcher to robustus Zone, Upper Muschelkalk, late Illyrian, late Anisian, Middle Triassic, Schön and Hippelein quarry at Neidenfels near Crailsheim, Germany (see Fig. 1). x 3.

Was this article helpful?

0 0

Post a comment