Allocrioceras is an ammonoid cephalopod from the Turonian to Santonian stages of the Late Cretaceous,[1] included in the turrilitoid family Anisoceratidae.

In 1963, Young gave the species its final classification in a new genus, Allocrioceras, originally defined by Spath in 1926.

Ammonites like this, with shell configurations differing from the typical tightly coiled spiral, are called heteromorphs.

It lived approximately 88 million years before present during the Turonian stage Cretaceous Period in what is now Texas.

annulatum found in the Sannine Formation of Lebanon, which show it preyed on comatulid crinoids and was a pelagic, aperture-upwards drifter.