Podocopida

{{Short description|Order of seed shrimps}}

{{Automatic taxobox

| image = Hvitmuslingkreps Candona candida.jpg

| image_caption = Candona candida

| taxon = Podocopida

| authority = Sars, 1866

| subdivision_ranks = Subordinate taxa

| subdivision = See text

}}

The Podocopida are an order of ostracods in the subclass Podocopa.{{Cite web |title=WoRMS - World Register of Marine Species - Podocopida |url=https://www.marinespecies.org/aphia.php?p=taxdetails&id=1091 |access-date=2022-12-12 |website=www.marinespecies.org}} It is the most diverse of the five orders of ostracods, and the only one with freshwater species.[https://books.google.com/books?id=TTBvdx3IJIMC&dq=Freshwater+Seed-Shrimp+%28Subphylum+Oligostraca%2C+Class+Ostracoda%29&pg=PA87 The Lost World of Fossil Lake: Snapshots from Deep Time][https://library.naturalsciences.be/pdfs-open-access/2020/Higuti%20and%20Martens%202020%20Thorp%20and%20Covich%20chapter%2022%20Final%20manuscript%20version.pdf Chapter 22 Class Ostracoda - — Library] The group also has a rich fossil record.{{cite book |author1=Akira Tsukagoshi |author2=Andrew R. Parker |name-list-style=amp |year=2000 |chapter=Trunk segmentation of some podocopine lineages in Ostracoda |journal=Hydrobiologia |volume=419 |issue=1 |pages=15–30 |doi=10.1023/A:1003981806643 |editor1=David J. Horne |editor2=Koen Martens |title=Evolutionary Biology and Ecology of Ostracoda |isbn=0-7923-6396-5|s2cid=32234952 }}

The superfamily Cytheroidea in the suborder Cytherocopina consists of non-swimming crawlers and burrowers. Most species are marine, but at least seven extant lineages have independently adapted to freshwater. The largest freshwater family is Limnocytheridae, with about 150 species in 20 genera.[https://academic.oup.com/jcb/article/36/6/849/2735737?login=false Collecting and Processing Living, Non-Marine Ostracods]