Perkinsea
Perkinsea is a class of alveolates.
Perkinsus is a genus in the class Perkinsea that is a parasite of bivalve mollusks; it displays a number of features characteristic of the dinoflagellates including laterally inserted heterodynamic flagella. However, it has been settled that Perkinsus does not belong into the phyla dinoflagellat, but rather into the phylum Perkinsozoa.