Prymnesiales

{{Short description|Order of single-celled organisms}}

{{Automatic taxobox

| taxon = Prymnesiales

| authority = Papenfuss

| image = HaptonemaChrysochromulinaFL.jpg

| image_caption = Chrysochromulina

}}

Prymnesiales is an order of Haptophyceae.{{AlgaeBase taxon|id=4596|name=Prymnesiales}}

It currently consists of three families:{{cite journal | last=Penot | first=Mathias | last2=Dacks | first2=Joel B. | last3=Read | first3=Betsy | last4=Dorrell | first4=Richard G. | title=Genomic and meta-genomic insights into the functions, diversity and global distribution of haptophyte algae | journal=Applied Phycology | publisher=Informa UK Limited | volume=3 | issue=1 | date=2022-07-28 | issn=2638-8081 | doi=10.1080/26388081.2022.2103732 | doi-access=free | pages=340–359}}

• Prymnesiaceae
• Chrysochromulinaceae
• Chrysoculteraceae{{cite journal | last=Nakayama | first=Takeshi | last2=Yoshida | first2=Masaki | last3=Noël | first3=Mary-Hélène | last4=Kawachi | first4=Masanobu | last5=Inouye | first5=Isao | title=Ultrastructure and phylogenetic position ofChrysoculter rhomboideusgen. et sp. nov. (Prymnesiophyceae), a new flagellate haptophyte from Japanese coastal waters | journal=Phycologia | publisher=Informa UK Limited | volume=44 | issue=4 | year=2005 | issn=0031-8884 | doi=10.2216/0031-8884(2005)44[369:uappoc]2.0.co;2 | pages=369–383}}