Species: finalidens BENITO, KUO, WIDRIG, JAGET & FIELD, 2022
Etymology: Latin, finalis (adj), "ending or final" and Latin, dens, "teeth." Reflects the fact that the specimen is among the latest-known toothed avilians, which appear to have died out in the end-Cretaceous mass extinction shortly after Janavis lived.
Holotype: NHMM RD 271
Locality: CBR-Romontbos Quarry, Eben-Emale, Liege, Belgium.
Horizon: Valkenburg Member, Maastricht Formation.
Age: Late Maastrichtian Stage, latest Senonian Subepoch, latest Gulf Epoch, Late Cretaceous.
Material: Isolated tooth, complete left pterygoid, a patial pedal phalanx, 6 cervical and 4 thoracic vertebrae, 6 ribs, a left scapula, a nearly complete left humerus, a right manual phalanx II:1, a proximal fragment of the right femur and several undentifiable fragments.