Haptophyte families

thumb|upright=0.75|Illustration: Pavlova Pavlovaceae is a family of haptophytes. It is the only family in the order Pavlovales, which is the only order in the class Pavlovophyceae. It contains four genera, Diacronema, Exanthemachrysis, Pavlova and Rebecca.

Prymnesiaceae is a family of algae in the clade Haptophyta. It contains toxic microalgae such as Prymnesium.

Syracosphaeraceae is a family of algae consisting of the following genera: