title: Timeline of Silurian research
text: # Timeline of Silurian research
  
  This timeline of Silurian research is a chronological listing of events in the history of geology and paleontology focused on the study of Earth during the span of time lasting from 443.4–419.2 million years ago; the Silurian, and the legacies of this period in the rock and fossil records.
  
  ## 19th century
  
  1825
  
  * De Kay described the new genus Eurypterus
  
  1835
  
  * Roderick Murchison proposes the Silurian period based on outcrops in Wales and publishes On the Silurian and Cambrian Systems, Exhibiting the Order in which the Older Sedimentary Strata Succeed each other in England and Wales with Adam Sedgwick
  
  1844
  
  * Agassiz described the new genus Pterygotus
  
  1859
  
  * Dawson described the new genus Prototaxites
  
  ## 20th century
  
  1937
  
  * W. H. Lang described the new genus Cooksonia
  
  1972
  
  * Kjellesvig-Waering described the new genus Brontoscorpio
  
  ## 21st century
  
  2010
  
  * Gonez and Gerrienne emended genus Cooksonia described by W. H. Lang in 1937
  