See text Acaroceratidae is family of Upper Cambrian (Trempealeauan) nautiloid cephalopods included in the Ellesmerocerida that contains two known genera, Acaroceras and Weishanuceras, both found in northern China.

Acaroceratidae represent some of the earliest Ellesmeroderida, which have their origin in the Plectronoceratidae, either in Plectronoceras or some related genus.

Acaroceras is known from the lower and middle Trempealeauan, upper Yenchou and overlying Wanwankou members of the Fengshan Formation.

Later Acaroceras and Weishanuceras are part of the entire suite of early cephalopods that lived during the Late Cambrian.

Acaroceras lends its name to the Acaroceras-Sinoceremoceras Zone which is contained by the Wanwankou member of the Fengshan Formation.