Paranautilus

{{Short description|Extinct genus of molluscs}}

{{Italic title}}

{{Taxobox

| name = Paranautilus

| fossil_range = M-U Triassic

| image =

| regnum = Animalia

| phylum = Mollusca

| classis = Cephalopoda

| subclassis = Nautiloidea

| ordo = Nautilida

| superfamilia = Clydonautilaceae

| familia = Liroceratidae

| genus = Paranautilus

| genus_authority = Mojsisovics, 1902

}}

Paranautilus is a genus of the Nautiloid family Liroceratidae with a very involute, moderately globular, smooth shell. The venter, at the outer rim, is arched, grading into broadly convex flanks. The dorsom, on the inner rim, is deeply impressed. Septa a close spaced, with slightly sinuous sutures. A member of the Clydonautilaceae, Paranautilus lived during the Middle and Late Triassic (Anisian - Norian) in what is now North America, Europe, and south Asia. Contemporary Liroceratids include Indonautilus and Sibyllonautilus.