Apr 5, 2025
Sketch of the relic hadrosauroid Gonkoken nanoi from Maastrichtian of Chile. It is known from the numerous bones of several individuals. Gonkoken possesses a mixture of primitive and progressive traits and belongs to non-hadrosaurid hadrosauroids. It is assumed that it originated from North American forms that existed before they were replaced by hadrosaurids. The remains of Antarctic and subantarctic "hadrosaurids" may actually belong to Gonkoken-type animals. Apparently, such ornithopods flourished in the far south at the end of the age of dinosaurs. Gonkoken reached 4 meters in length and coexisted with such unusual dinosaurs as the parankylosaur Stegouros elengassen.
Adobe Photoshop, 2025.