The Ostracoda have long been listed as a gap within the World Register of Marine Species. Recently, this gap has largely been filled, thanks to the work done by Ostracoda editor Simone Brandão and the financial support of LifeWatch. Recently, over 38.000 new Ostracoda species names have been added to WoRMS, and 7.101 existing species names have been updated and verified. This brings the total of Ostracoda species names within WoRMS to 49.209, of which the majority considers marine fossils (39.042 species). In parallel, 1.863 new sources on Ostracoda have been added to the literature module of WoRMS.

As the higher classification of Ostracoda is not always clearly documented in literature, there are currently 2.276 and a corresponding 13.603  species temporarily placed within the 'Ostracoda incertae sedis' placeholder. It is hoped that the Ostracoda editor community will be able to go through these genera and put each one of them in the correct family.