†family Orthotomidae Muir-Wood 1936 (lamp shell)
Rhynchonellata - Terebratulida - Orthotomidae
Parent taxon: Terebratulidina according to A. Williams et al. 2007
Sister taxa: Cancellothyridoidea, Compositelasmatoidea, Cryptonelloidea, Dielasmatoidea, Dyscolioidea, Falciferula, Goliathyris, Loboidothyridoidea, Mayaothyris, Pseudorhaetina, Stringocephaloidea, Terebratuloidea, Vex, Zenobiathyridae, Zenobiathyris
Subtaxa: Orthotoma
Type: Orthotoma
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Jurassic of Austria (2 collections), Hungary (5), Saudi Arabia (1)
Total: 8 collections each including a single occurrence