Geoplanoidea

{{Short description|Superfamily of flatworms}}

{{Automatic taxobox

| image = Geoplana burmeisteri.jpg

| image_caption = Obama burmeisteri

| taxon = Geoplanoidea

| authority = Stimpson, 1857

| subdivision_ranks = Families

| subdivision_ref = {{Cite journal | last1 = Sluys | first1 = R. | last2 = Kawakatsu | first2 = M. | last3 = Riutort | first3 = M. | last4 = Baguñà | first4 = J. | title = A new higher classification of planarian flatworms (Platyhelminthes, Tricladida) | doi = 10.1080/00222930902741669 | journal = Journal of Natural History | volume = 43 | issue = 29–30 | pages = 1763–1777| year = 2009 }}

| subdivision =

• Dugesiidae
• Geoplanidae

}}

Geoplanoidea is a superfamily of freshwater and land triclads that comprises the species of the Geoplanidae and the Dugesiidae families.

Dugesiidae and Geoplanidae share a duplication of the cluster that codifies for the 18S ribosomal RNA.{{Cite journal | last1 = Carranza | first1 = S. | last2 = Littlewood | first2 = D. T.| last3 = Clough | first3 = K. A. | last4 = Ruiz-Trillo | first4 = I. | last5 = Baguñà | first5 = J. | last6 = Riutort | first6 = M. | doi = 10.1098/rspb.1998.0341 | title = A robust molecular phylogeny of the Tricladida (Platyhelminthes: Seriata) with a discussion on morphological synapomorphies | journal = Proceedings of the Royal Society B: Biological Sciences | volume = 265 | issue = 1396 | pages = 631–640 | year = 1998 | pmid = 9881470 | pmc = 1689013}}