User blog comment:KamikazePyro/The Corythosaurus problem/@comment-30261954-20190629214155/@comment-1734776-20190629232146

Exactly, so at some point InGen had a Corythosaurus clone or they probably wouldn't have known the behavior and coloration of it. It also says DNA samples were retrieved prior to the evacuation of Sorna, implying live animals (or recently alive). Now I'm thinking it had to have been prior to 1994 at the latest because the cleanup list claims its previous status was also inactive. I see the point people try to make because the top of the page listing partial DNA says "species yet to be cloned," but in this case there would have to be an exception made to explain something in-universe.