Strophomenata

Strophomenata is an extinct class of brachiopods in the subphylum Rhynchonelliformea.
Orders.
Billingsellida.
An order that contains the suborder Clitambonitidina (and others?) .
Orthotetida.
An order or superfamily that includes the Chilidiopsoidea. Ontogeny given by Bassett and Popov (2017), resembling that of Kutorginides.
Believed to be sister to Strophomenides, = Strophomenida + Billinsellida + Productida.
Includes the Chileids (e.g. "Coolinia").