Photograph of the ammonite Pachydiscus kamishakensis from the Kaguyak Formation.
Photograph of the ammonite Pachydiscus
kamishakensis from the Kaguyak Formation. This
specimen is approximately 24 cm wide (scale in
centimeters), but they can be 1 m (3 ft) or more in
diameter. Accession number KATM00165 9080.