This ammonite of the species Neochetoceras steraspis shows the lamelaptychus at the end of the living chamber. The apytychus is the buck like mouth tool of the ammonites. | ||||
Location: | Solnhofen, Germany | |||
| Size of Plate: | about 98 x 65 mm | |||
| Age: | Upper Jurasic , Malm zeta (about. 150 Mill. years) | |||