This taxon is considered nomen dubium, species not entered
of the valid taxon Macronaria
according to the Paleobiology Database.
See the page for Macronaria →
Bibliography
Original description
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