Claim: Kritosaurus, now thought to be a synonym of Secernosaurus koerneri, had the Anasazisaurus and Naashoibitosaurus species discovered by Jack Horner who is an American paleontologist most famous for discovering and naming Maiasaura.
Evidence: This species is now thought to be a synonym of Secernosaurus koerneri. In 1990, Jack Horner and David B. Weishampel once again separated Gryposaurus, citing the uncertainty associated with the latter's partial skull. Horner in 1992 described two more skulls from New Mexico that he claimed belonged to Kritosaurus and showed that it was quite different from Gryposaurus, but the following year Adrian Hunt and Spencer G. Lucas put each skull in its own genus, creating Anasazisaurus and Naashoibitosaurus. The species was named in honor of Jack Horner, the American paleontologist who first described the skull in 1992. John Robert Horner (born June 15, 1946) is an American paleontologist most famous for discovering and naming Maiasaura, providing the first clear evidence that some dinosaurs cared for their young.