Kritosaurus
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Kritosaurus is an incompletely known genus of hadrosaurid dinosaur. It lived about 74.5-66 million years ago, in the Late Cretaceous of North America. The name means "separated lizard", but is often m
Kritosaurus
Barnum Brown's initial flatheaded reconstruction of the skull of K. navajovius, 1910
Unnamed specimen from the Sabinas Basin in Mexico, assigned to Kritosaurus sp. by Kirkland et al. (2006) but considered an indeterminate saurolophine by Prieto-Márquez (2013). The specimen is informally known as "Sabinosaurus".
Cast of an assigned egg
Gryposaurus
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Gryposaurus was a genus of duckbilled dinosaur that lived about 80 to 75 million years ago, in the Late Cretaceous of North America. Named species of Gryposaurus are known from the Dinosaur Park Forma
Kritosaurus
…with Kritosaurus, a move supported by Charles Gilmore. This synonymy was used through the 1920s (William Parks's designation of a Canadian species as Kritosaurus incurvimanus, now considered a synonym of Gryposaurus notabilis) and became standard after the publication of Richard Swann Lull and Nelda Wright's 1942 monograph…
Utah Gryposaurus
G. notabilis (formerly G. incurvimanus), collected 1918
Skull, Royal Tyrrell Museum
G. monumentensis skull