"Archaeornithipus"@en . . . . . . "1014670398"^^ . "Archaeornithipus was a genus of large bird ichnogenus discovered in Spain. The tracks date back to the Berriasian stage of the Cretaceous, making them among the oldest bird trace fossils in the world."@en . "Archaeornithipus"@en . . . "42142374"^^ . . . "Archaeornithipus was a genus of large bird ichnogenus discovered in Spain. The tracks date back to the Berriasian stage of the Cretaceous, making them among the oldest bird trace fossils in the world."@en . . . . . . . "Fuentes Vidarte, 1996"@en . . . . . "1073"^^ . . . . . . . . . . . .