(Mecynoeciidae) (Mecynoeciidae) is a biological family of the class Stenolaemata and order Cyclostomata.
Calvetiidae
Corymboporidae
Crisiidae
Cytididae
Diaperoeciidae
Diastoporidae
Entalophoridae
Frondiporidae
Hastingsiidae
Heteroporidae
Horneridae
Lichenoporidae
Mecynoeciidae
Oncousoeciidae
Petaloporidae
Plagioeciidae
Pseudidmoneidae
Stigmatoechidae
Terviidae
Theonoidae
Tretocycloeciidae
Tubuliporidae