Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Eupachydiscus - Eupachydisus is a large coarse-ribbed Pachydiscid ammonite genus from the Upper Cretaceous found in Coniacian to Campanian age strata in Europe Madagascar Japan and British Columbia. The whorl section in Eupachydiscus is inflated and depressed almost round in the later growth stages.
Animal