List of lost dinosaur specimens

This list of lost, damaged, or destroyed dinosaur specimens enumerates those fossil dinosaur specimens that have been discovered only to be lost or damaged after recovery from the field. Some of these specimens which had only gone missing were later recovered as well.

Lost specimens

Nickname	Catalogue Number	Taxon	Age	Unit	Notes	Images
Specimen 9	None	Corythosaurus
Specimen 13	None	Corythosaurus
	American Museum of Natural History 5777	Amphicoelias fragillimus	Late Jurassic	Morrison Formation	Named as the holotype of Amphicoelias fragillimus by Edward Drinker Cope and then subsequently lost. It is possible that Cope himself or someone else disposed of it, or that it crumbled because of inadequate preservation methods.	Only illustration of the vertebrae
Companion tracks of MGUH 27219	N/A	Geological Museum of Copenhagen	Thyreophora	Rhaetian	Hoganas Formation	Sweden

Recovered specimens

Nickname	Catalogue Number	Institution	Taxon	Age	Unit	Country	Notes	Images

References

• Carpenter, K. (2006). "Biggest of the big: a critical re-evaluation of the mega-sauropod Amphicoelias fragillimus." In Foster, J.R. and Lucas, S.G., eds., 2006, Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36: 131–138.
• Spalding, D. A., 2001, Bones of contention: Charles H. Sternberg's lost world: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, pp. 481–503.