†Lotharingius Noel 1973 (haptophyte alga)
Prymnesiophyceae - Watznaueriales - Watznaueriaceae
Parent taxon: Watznaueriaceae according to P. R. Bown and J. R. Young 1997
Sister taxa: Ansulasphaera, Bibreviconus, Bussonius, Cyclagelosphaera, Cylindralithus, Darwinilithus, Diazomatolithus, Perchnielsenella, Watznaueria
Subtaxa: Lotharingius barozii, Lotharingius contractus, Lotharingius crucicentralis, Lotharingius hauffii, Lotharingius sigillatus, Lotharingius velatus
Type: Lotharingius barozii
Ecology: passively mobile planktonic "photoautotroph"