Okurodani Formation
Introduction The '''Okurodani Formation''' is an Early Cretaceous geologic formation in central Honshu, Japan. Part of the Tetori Group, it primarily consists of freshwater continental sediments deposited in a floodplain environment, with occasional volcanic tuffite horizons. It has an uncertain age, probably dating between the Hauterivian and Aptian. An indeterminate iguanodontian dinosaur tooth has been recovered from the formation. Many other fossil vertebrates are known from the KO2 locality
Vertebrate Paleobiota === Amphibians ==='''Amphibians reported from the Okurodani Formation'''GenusSpeciesLocationStratigraphic positionMaterialNotesImagesAnuraIndeterminateKO2Discoglossid gradeCaudata IndeterminateKO2=== Squamates ==='''Squamates reported from the Okurodani Formation'''GenusSpeciesLocationStratigraphic positionMaterialNotesImages''Sakurasaurus''''S. shokawensis'' KO2?Anguimorpha IndeterminateKO2Scincomorpha IndeterminateKO2new taxonSquamata IndeterminateKO22 distinct taxa=== Turtles ==='''Turtles reported from the Okurodani Formation'''GenusSpeciesLocationStratigraphic positionMaterialNotesImages''cf. Sinemys'' IndeterminateKO2''Sinochelys''IndeterminateKO2SinochelyidaeAdocidae IndeterminateKO2Trionychidae IndeterminateKO2=== Choristoderes ==='''Choristoderes reported from the Okurodani Formation'''GenusSpeciesLocationStratigraphic positionMaterialNotesImages''Monjurosuchus''IndeterminateKO2"Association of right squamosal, jugal, quadratojugal, and quadrate"''Monjurosuchus''Shokawa ikoi''''Shokawa''''S. ikoi''KO2Partial skeleton
See also * List of dinosaur-bearing rock formations** List of stratigraphic units with indeterminate dinosaur fossils
Footnotes
References * Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds. ): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. .