†subfamily Undulellinae Cooper and Grant 1975 (lamp shell)
Strophomenata - Strophomenida - Rugosochonetidae
Parent taxon: Rugosochonetidae according to A. Williams et al. 2000
Sister taxa: Capillomesolobinae, Chonetinellinae, Delepineinae, Lamellosiinae, Plicochonetinae, Quinquenellinae, Riosanetinae, Rugosochonetinae, Striochonetinae, Svalbardiinae
Subtaxa: Micraphelia Subtilichonetes Undulella
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of Japan (1 collection), Malaysia (2), the Russian Federation (5), Tajikistan (1), United States (59: New Mexico, Texas)
Total: 68 collections including 84 occurrences