†family Oligorhynchiidae Cooper 1956 (lamp shell)
Rhynchonellata - Rhynchonellida - Oligorhynchiidae
Parent taxon: Ancistrorhynchoidea according to A. Williams et al. 2002
See also Bassett and Cocks 1974, Popov et al. 2000 and Rubel and Rozman 1977
Sister taxa: Ancistrorhynchidae, Niorhynicidae, Sphenotretidae
Subtaxa: Oligorhynchia Paraoligorhyncha Tonsella
Ecology: stationary epifaunal suspension feeder
Distribution:
• Devonian of Argentina (1 collection)
• Silurian of the United Kingdom (1)
• Ordovician of Kazakhstan (4), the United Kingdom (4), United States (3: Tennessee, Virginia)
Total: 13 collections each including a single occurrence