Perkinsidae

Perkinsidae is a family of alveolates in the phylum Perkinsozoa, a sister group to the dinoflagellates.

It includes Perkinsus species, which are parasitic protozoans, some of which cause disease and mass mortality in wild and farmed molluscs such as oysters.

There are two genera:

Perkinsidae possess plastids which do not contain DNA.