Which two famous paleontologists were rivals in the 19th-century 'Bone Wars'?

The two famous paleontologists who became rivals in the 19th-century “Bone Wars” were Edward Drinker Cope and Othniel Charles Marsh. Their feud turned fossil hunting in the American West into a fiercely competitive race for discoveries and scientific prestige.

The rivalry began cordially after the pair met in Berlin in 1864, but their relationship deteriorated through personal disputes, competing fossil claims, and public attacks in scientific publications. From the 1870s into the 1890s, their teams searched bone beds across Colorado, Wyoming, and nearby regions.

Cope and Marsh used wealth, field agents, and fossil collectors to outmaneuver one another. The conflict involved accusations of bribery, theft, sabotage, and destroyed specimens. Their haste also produced naming errors and confusing reconstructions, including Cope’s famous mistake placing the head of Elasmosaurus at the wrong end.

Despite the feud’s destructive side, their expeditions described 142 new dinosaur species and helped make dinosaurs a public sensation. Both men died financially strained, their rivalry lasting until Cope’s death in 1897.