The taxon was first described in the September 2010 version of this Report, but it is not clear whether that version was ever physically printed. If not, then the December 2010 version (ref 41031, which was printed) would become the correct reference for the designation of this taxon. However, in that later version, the species is designated only as Amphicoelias "brontodiplodocus" - in quotes - with a diagnosis but without a holotype (which is given as specimen DQ-BS in the September 2010 Report). This later report also states "The use of A. "brontodiplodocus" is temporary and for convenience in discussions presented herein, and not as an official nomenclatural declaration."
Full reference: H. Galiano and R. Albersdörfer. 2010. A New Basal Diplodocoid Species, Amphicoelias brontodiplodocus from the Morrison Formation, Big Horn Basin, Wyoming, with Taxonomic Reevaluation of Diplodocus, Apatosaurus, Barosaurus and Other Genera. Dinosauria International (Ten Sleep, WY) Report for September 2010 1-41
Belongs to Amphicoelias according to H. Galiano and R. Albersdörfer 2010
See also Galiano and Albersdörfer 2010
Sister taxon: Amphicoelias altus
Type specimen: DQ-BS, a partial skeleton. Its type locality is Dana Quarry, which is in an Oxfordian/Kimmeridgian fine channel fill mudstone in the Morrison Formation of Wyoming.
Ecology: ground dwelling herbivore
Distribution: found only at Dana Quarry
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.