†subfamily Orthostrophiinae Schuchert and Cooper 1931 (lamp shell)
Rhynchonellata - Orthida - Plectorthidae
Parent taxon: Plectorthidae according to V. Havlicek and P. Storch 1990
Sister taxa: Apollonorthis, Ashinaorthis, Atlantida, Corineorthis, Desmorthis, Doleroides, Hebertella, Irhirea, Lipanorthis, Mimella, Nanorthis, Oligorthis, Paterorthis, Platystrophiinae, Platystrophinae, Plectorthinae, Plectorthis, Pseudomimella, Schizophorella, Severginella
Subtaxa: Giraldibella
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of the Czech Republic (6 collections)
• Ordovician of Myanmar (1), the Russian Federation (1), Sweden (3)
Total: 11 collections each including a single occurrence