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Temporal range: Bajocian[1]
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Hammatoceratidae
Subfamily: Hammatoceratinae
Genus: Euaptetoceras
Buckman, 1922
  • See text

Euaptetoceras is an evolute hammatoceratid ammonite from the lower Middle Jurassic, included in the family Hammatoceratidae and the subfamility Hammatoceratinae. The genus may be a junior synonym for Eudmetoceras of Buckman, 1920.

The shell of Euaptetoceras has an evolute, compressed, discoidal shape with a whorl section higher than wide. The inner whorls have long primary ribs while the outer whorls become smooth. The venter, which is the outer rim, is narrowly to sharply rounded and its suture is rather complex. Eudmetoceras is found in strata of Europe, Iran, and Argentina.


  1. ^ Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.