Fig. 5 in Soft-tissue attachments in orthocerid and bactritid cephalopods from the Early and Middle Devonian of Germany and Morocco

Fig. 5. SEM micrographs of Bactrites, and Cycloceras of early Emsian age (Early Devonian) from Ouidane Chebbi (Tafilalt, Morocco). The specimens coated with carbon. A. Bactrites sp. C; PIMUZ 7272; A1, detail of the annular elevation; note the rugged surface of the adoral part as well as the right and the median lobe of the annular elevation; A2, dorsal view of the same, showing last formed septum and posterior portion of body chamber; note the tracking bands, the mural band, and the annular elevation. B. Cycloceras sp.; PIMUZ 7263; B1, lateral view of a part of the phragmocone; B2, B3, same specimen, details of the wrinkle layer; note that the wrinkles are asymmetric in cross section with the steeper slope pointing adapically. C. Cycloceras sp.; PIMUZ 7261; detail of the conchal furrow. D.?Bactrites sp.; PIMUZ 7269; D1, detail of the wrinkle layer; D2, same specimen detail of the wrinkle layer in a smaller scale, note the asymmetry; D3, same specimen, overview of the adoral part of the body chamber.