Präparation des Labyrinths beim Katzenhai

As a first step, the chondrocranium of the dogfish is cleaned from the skin and adhering muscles from above. By cautiously working with a scalpel, thin superficial layers of the cartilage are cut away until the holes of the three semicircular ducts are opened. The rest of the preparational proceeding is done by means of a pointed steel forceps which is used for cutting or breaking the cartilage aw…