Family Rhabdidae Christikov 1975 (tusk shell)
Scaphopoda - Dentaliida - Rhabdidae
Parent taxon: Dentaliida according to P. D. Reynolds and G. Steiner 2008
Sister taxa: Anulidentaliidae, Baltodentaliidae, Calliodentaliidae, Dentaliidae, Fustiariidae, Gadilinidae, Laevidentaliidae, Omniglyptidae, Prodentaliidae, Progadilina, Suevidontus
Subtaxa: Rhabdus
Ecology: slow-moving semi-infaunal deposit feeder
Distribution:
• Quaternary of United States (1: California collection)
• Pliocene of United States (3: California, Oregon)
• Miocene of Panama (1), United States (8: Alaska, Oregon)
• Oligocene of Denmark (2)
Total: 15 collections each including a single occurrence