Species: mirabilis CHARIG, 1967 emend BUTLER, BARRETT, ABEL & GOWER,
2009
Etymology: Latin, mirabilis, "wonderful or strange."
= Hypselorhachis mirabilis CHARIG, 1967 (nomen nudum)
Holotype: NHM R16586
Locality: Field locality U11/2, Ruhuhu valley, southwestern Tanzania, Tanganyika, East Africa.
Horizon: Liufa Member, Manda Formation.
Note: Correlated with subzone C of the Cynognathus Assemblage Zone of the Beaufort Group.
Biostratigraphy:
Age: Latest Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.
Material: Anterior dorsal vertebra.