Fossil specimen (fragment) of the large heteromorph ammonite *Diplomoceras* sp. from the Cretaceous Lopez de Bertodano Formation of Seymour Island, Antarctica (PRI 61188). Specimen is from the research collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Length of specimen is approximately 13 cm. Model by Emily Hauf.