PaleoDB taxon number: 378234
Alternative combinations: Amphicoelias fragillimus, Amphicoelias fragillium
Full reference: E. D. Cope. 1878. A new species of Amphicoelias. The American Naturalist 12:563-564
Sister taxa: none
Type specimen: AMNH FR 5777 (lost), a set of vertebrae (Dorsal neural arch). Its type locality is Cope Quarry III, Cope's Nipple, which is in a Tithonian dry floodplain mudstone in the Morrison Formation of Colorado.