cryptochilidae cryptochilidae cryptochilidae is a family of marine ciliates in the order philasterida. cryptochilidae cryptochilum - illustration in bullettino delle sedute della accademia gioenia di scienze naturali in catania, 1893 scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: ciliophora class: oligohymenophorea subclass: scuticociliatia order: philasterida family: cryptochilidaeberger in corliss, 1979 genera biggaria cryptochilum