Ce taxon est considéré comme nomen dubium, species not entered
du taxon valide Macronaria
selon la Paleobiology Database.
Voir la fiche de Macronaria →
Bibliographie
Description originale
C. C. Mook. 1917. Criteria for the determination of species in the Sauropoda, with description of a new species of Apatosaurus. Bulletin of the American Museum of Natural History 37(16):355-358