Lyelliceratidae

The Lyelliceratidae comprises a family of ammonites known mainly from the Albian stage of the lower Cretaceous, included in the Acanthocerataceae. They are mostly contemporary with the acanthoceratacean Brancoceratidae and are though to have given rise to the Acanthoceratidae

Morphology
Shells of the Lyelliceratidae are typically small to moderate in size, fairly evolute, and moderately compressed with straight or slightly curved ribs that either cross over the venter or break down into mid ventral and ventrolateral tubercles.

Genera
Genera, in stratigraphic order starting with the earliest include Prolyelliceras, Lyelliceras, Tegoceras, Neophlycticeras, Salaziceras, and Budaiceras

Stoliczkaia, previously include has been reassigned to the Acanthoceratidae although retained in the Lyelliceratidae in some references.