Lyelliceratide

Lyelliceratidae composes a family of mainly Albian ammonites included in the Acanthocerataceae characterized by small to moderate size, moderately compressed, fairly evolute shells with straight or slightly curved ribs that either cross over the venter or break down into mid ventral and ventrolateral tubercles.

Genera, in stratigraphic order starting with the earliest, include


 * Prolyelliceras


 * Lyelliceras


 * Tegoceras


 * Neophyclitieras


 * Saliziceras


 * Budaiceras

Stoliczkaia, previously included, has been removed to the Acanthoceratidae, although still retained in the Lyelliceratae in some references.

Lyelliceratidae are mostly contemporary with the acanthoceratacean Brancoceratidae and are thought to have given rise to the Acanthoceratidae.