Neithea

{{Short description|Extinct genus of bivalves}}

{{Automatic taxobox

| fossil_range = Early Jurassic - early Paleocene

| image = Neithea striatocostata.jpg

| image_caption = Fossil of Neithea striatocostata located at the Teylers Museum, Haarlem.

| taxon = Neithea

| authority = Meek, 1864

| subdivision_ranks =

| subdivision =

}}

Neithea is an extinct genus of bivalve molluscs that lived from the Early Jurassic to the early Paleocene, with a worldwide distribution.[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=16842 Neithea] in the Paleobiology Database Neithia sp. are inequivalve. That means that the two valves are not the same shape, the right valve being strongly concave and the left valve being flattened or concave. Sculpture consist of alternating strong and weaker radiating ribs.