Stenolaemata 狭喉綱

Order（目）	Family（科）
Cryptostomida	Arthrostylidae Nikiforovellidae Ptilodictyidae Rhabdomesidae Rhinidictyidae Rhomboporidae Stictoporellidae Streblotrypidae
Cyclostomatida	Actinoporidae Cerioporidae Diastoporidae Lichenoporidae Tubuliporidae
Cystoporida	Ceramoporidae Cystodictyonidae Etherellidae Fistuliporidae Goniocladiidae Hexagonellidae
Fenestrida	Acanthocladiidae Fenestellidae
Trepostomatida	Amplexoporidae Araxoporidae Batostomellidae Dyscritellidae Heterotrypidae Monticuliporidae Stenoporidae Trematoporidae
Order indet. （目未定）

Japan Paleobiology Database