The Fort Crittenden Formation is a geological formation in Arizona whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. pp. 574–88. .
Vertebrate paleofauna
Amphibians Amphibians of the Fort Crittenden Formation Genus Species Location Stratigraphic position Abundance NotesOpisthotritonIndeterminateScapherpetonIndeterminate
Archosaurs Tyrannosauridae fossils attributed to Gorgosaurus have been unearthed here. Archosaurs of the Fort Crittenden Formation Genus Species Location Stratigraphic position Abundance Notes ImagesAlligatoridaeIndeterminateKnown only from a single scute.Paleontologists Robert M. Sullivan and Spencer G. Lucas questioned the referral to this specimen to Allognathosuchus in the formation because the referred remains were so scant and Allognathosuchus is confined to the Paleogene. They regarded the referred scute as belonging to an indeterminate alligatoroid.HadrosauridaeD’Emic, M.D., Wilson, J.A., and Thompson, R. 2010. "The end of the sauropod dinosaur hiatus in North America". Palaeogeography, Palaeoclimatology, Palaeoecology 297: 486–90.IndeterminateThese teeth were attributed to Trachodon mirabilis in the past.CrittendenceratopsC. krzyzanowskiiSebastian G. Dalman; John-Paul M. Hodnett; Asher J. Lichtig; Spencer G. Lucas (2018). "A new ceratopsid dinosaur (Centrosaurinae: Nasutoceratopsini) from the Fort Crittenden Formation, Upper Cretaceous (Campanian) of Arizona". New Mexico Museum of Natural History and Science Bulletin. 79: 141–64.A centrosaurine ceratopsid.cf. RichardoestesiaIndeterminateDromaeosauridaeIndeterminate
Bony fishes
Bony fishes of the Fort Crittenden Formation Genus Species Location Stratigraphic position Abundance Notes ImagesMelviusIndeterminatePachyrhizodusIndeterminate
Cartilaginous fishes Cartilaginous fishes of the Fort Crittenden Formation Genus Species Location Stratigraphic position Abundance NotesMyledaphusM. bipartitus
Lepidosaurs Teiid and anguid lizards are known from the formation.
Turtles
Turtles of the Fort Crittenden Formation Genus Species Location Stratigraphic position Abundance NotesAdocusAspideretesBasilemysPlastomenus
See also
List of dinosaur-bearing rock formations
Footnotes
References Sullivan, R.M., and Lucas, S.G. 2006. "The Kirtlandian land-vertebrate "age" – faunal composition, temporal position and biostratigraphic correlation in the nonmarine Upper Cretaceous of western North America." New Mexico Museum of Natural History and Science, Bulletin 35:7–29. Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. .