Original name  
  Check ECoF  
  Current accepted name  
Yes
  Status  
Accepted name
  Status details  
senior synonym, new combination
  Status ref.  
  Etymology of generic noun  
Greek, prosopon = face (Ref. 45335).
  Etymology of specific epithet  
Named after Lieut. R. S. Williamson of the U.S. Pacific Railroad Exploration.
  Eponymy  
Lieutenant Robert Stockton Williamson (1825–1882) was an American soldier and engineer in the US Army Corps of Topographical Engineers. [...]
  Link to references  
References using the name as accepted
  Link to other databases  
ITIS TSN : 162009 | Catalogue of Life | ZooBank | WoRMS