Murchisonioidea

{{Short description|Extinct superfamily of gastropods}}

{{Taxobox

| image =

| image_caption =

| regnum = Animalia

| phylum = Mollusca

| classis = Gastropoda

| unranked_superfamilia = clade Vetigastropoda

| superfamilia = Murchisonioidea

| superfamilia_authority = Koken, 1896

| subdivision_ranks = Families

| subdivision = See text

}}

Murchisonioidea is an extinct superfamily of small to large sea snails, marine gastropod mollusks in the clade Vetigastropoda.{{cite journal

|author1=Bouchet, P. |author2=Rocroi, J.-P.

|name-list-style=amp | year = 2005

| title = Classification and Nomenclator of Gastropod Families

| journal = Malacologia

| volume =47

| issue = 1–2

| pages =

| doi =

}}

This superfamily was previously included in the Caenogastropoda by Ponder and Warén (1988) and by Bandel in studies published in 1993 and 1997. However, studies by Tracey et al. (1993){{cite book | title=Mollusca, Gastropoda; in : M.J. Benton (ed.) The Fossil Record, volume 2| last=Tracey | first=S. |author2=J.A. Todd |author3=D.H. Erwin| date=1993| pages=131–167| publisher=Chapman & hall| location=London}} and by Frýda and Manda (1997){{cite journal |author1=J. Frýda |author2=S. Manda |name-list-style=amp | title=A gastropod faunule from the Monograptus uniformis graptolite Biozone (Early Lochkovian, Early Devonian) in Bohemia| journal=Mitteilungen aus dem Geologisch-Pläontologischen Institut der Universität Hamburg| year=1997| volume=80| pages=59–122}} put them into the Archaeogastropoda. This has been confirmed by new findings on archaeopod-type protoconchs in species from this families, dating from the early Devonian.