This ammonite of the genus Perisphinctes shows a quite chaotic pattern of the ribs. This kind of pathology is not so rarely to observe but the most pathologic ammonites do not show this kind of deformation so clearly and strong as this piece. | |||
Location: | Dehme, Porta Westfalica, North Germany | ||
Size of Ammonite Fossil: | about 42 mm | ||
Age: | Middle Jurassic, Callovian (about 161 Ma) |