Description

Docidoceras, an extinct genus of ammonites belonging to the Ammonitida order, existed during the Middle Jurassic period. This genus is classified within the Otoitidae family, which is a component of the ammonite superfamily known as Stephanoceratoidea.

Docidoceras is characterized by its wide, delicately ribbed, and coiled shell with a flattened whorl section. The outer rim, referred to as the venter, displays a broad arch, and this area is marked by uninterrupted ribs. In contrast, the inner rim of the whorls, known as the dorsum, is notably depressed.

These ammonites, part of the Docidoceras genus, appear to have had a nearly worldwide distribution across Middle Jurassic seas. However, it's important to note that despite their global presence in the fossil record, the majority of Docidoceras specimens discovered at the time of this writing are concentrated in Alaska.