page_title: Timeline of hadrosaur research
section_title: 1880s
hierarchical_section_title: Timeline of hadrosaur research / 19th century / 1880s
caption_attribution_description: Italiano: Fossil of Orthomerus, an ornithopod dinosaur Took the photo at Musee d'Histoire Naturelle, Brussels
context_page_description: This timeline of hadrosaur research is a chronological listing of events in the history of paleontology focused on the hadrosauroids, a group of herbivorous ornithopod dinosaurs popularly known as the duck-billed dinosaurs. Scientific research on hadrosaurs began in the 1850s, when Joseph Leidy described the genera Thespesius and Trachodon based on scrappy fossils discovered in the western United States. Just two years later he published a description of the much better-preserved remains of an animal from New Jersey that he named Hadrosaurus.
  The early 20th century saw such a boom in hadrosaur discoveries and research that paleontologists' knowledge of these dinosaurs "increased by virtually an order of magnitude" according to a 2004 review by Horner, Weishampel, and Forster. This period is known as the great North American Dinosaur rush because of the research and excavation efforts of paleontologists like Brown, Gilmore, Lambe, Parks, and the Sternbergs. Major discoveries included the variety of cranial ornamentation among hadrosaurs as scientist came to characterize uncrested, solid crested, and hollow crested species.
context_section_description: 1883
  Harry Govier Seeley described the new genus and species Orthomerus dolloi.
  Cope still regarded hadrosaurs as amphibious.
  1888
  Richard Lydekker described the new species Trachodon cantabrigiensis.
  1889
  Marsh described the new species Hadrosaurus breviceps. He also described the new species Hadrosaurus paucidens.
  Cope described the new genus and species Pteropelyx grallipes.
caption: Orthomerus dolloi limb bones
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