Species: agilis (MARSH, 1872) MARSH, 1890)
Etymology:
= Hadrosaurus agilis MARSH, 1872
= Trachodon agilis (MARSH, 1872)
Holotype: YPM 1190
Locality: Near Smokey Hill River, SE. 29 or 29, T13S, R34W, Logan County, Kansas.
Horizon: Smoky Hill Member, Niobrara Formation.
Biostratigraphy:
Age: Santonian or Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material: Parts of maxillae and dentary, the vertebrael column practically
complete, right scapula, both sterns, both humeri, both radii and ulnae, right
ilium, both femora, 1 fibula and both feet.
Note: BROWN, 1907 reports 3 gastroliths found near the front legs.