thigmophryidae thigmophryidae thigmophryidae is a family of marine ciliates in the order philasterida. thigmophryidae scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: alveolata phylum: ciliophora class: oligohymenophorea order: philasterida family: thigmophryidaechatton & lwoff, 1926 genera myxophyllum raabe, 1934 thigmophrya chatton & lwoff, 1923