See text Douvilleiceras is a genus of ammonites from the Middle to Late Cretaceous.

Its fossils have been found worldwide, in Africa, Asia, Europe, and North and South America.

Shells of Douvilleiceras inaequinodum can reach a diameter of about 8–10 cm (3.1–3.9 in).

[2][3] Species within the genus Douvilleiceras include:[4] Fossils of Douvilleiceras are found in the Cretaceous of Angola, Brazil, Canada, Colombia (Capotes Formation, Cundinamarca),[6] the Dominican Republic, Egypt, France, Iran, Japan, Madagascar, Mexico, Peru, South Africa, Switzerland, the former USSR, the United Kingdom, Alaska and Texas.

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