Pseudonautilidae

Pseudonautilidae, from the Upper Jurassic and Lower Cretaceous, is a family included in the Nautilaceae, characterized by involute and generally compressed shells with highly sinuous, "goniatitic" sutures and a siphuncle usually ventral of the center.

Genera within the Pseudonautilidae include

Palelialia  L Cret

Pseudaganides  U Jur

Pseudonautilus U Jur - L Cret Xenocheilus U Jur - L Cret.