AmmoGesomon is a Mollusk Digimon whose name is derived from "ammonite" and "Gesomon". He was created solely for the fanfictional film idea Digimon: Digitaclysm – Part 1 which is part of Digimon Cinematic Sagas.
AmmoGesomon looks almost exactly like Gesomon, but it has a grey skin and a large spiral-formed brown-gray shell which covers almost every part of its body, except for its mouth. And it has four clawed tentacles, unlike Gesomon who has two.
Digimon: Digitaclysm – Part 1
AmmoGesomon only appears as one of MetalSeadramon's servants. He joined his master and the other servants in the battle of Captown, South Africa. AmmoGesomon is one of MetalSeadramon's most powerful soldiers and was challenged by Shakoukimon (Shakkoumon's alternate name in this fan fiction) and finally destroyed by him.