Prymnesiophyceae
Encyclopedia
Prymnesiophyceae is a haptophyte class
Class (biology)
In biological classification, class is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order...

. Although it was originally described by Casper in 1972, it did not receive a Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 diagnosis (a requirement for valid publication under the International Code of Botanical Nomenclature) until Hibberd provided one in 1976.
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