Turney Ranch Formation

Turney Ranch Formation
Stratigraphic range: Albian–Cenomanian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Location
Region	Arizona
Country	USA

The Turney Ranch Formation is a mid-Cretaceous geological formation in the United States. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.^[1]

Fossil content

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Sauropod

Sauropods of the Turney Ranch Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Sonorasaurus[2]	S. thompsoni	Whetstone Mountains of southeastern Arizona		A partial skeleton	A brachiosaurid sauropod

Theropods

Theropods of the Turney Ranch Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Acrocanthosaurus[3]	A. atokensis			Teeth	A carcharodontosaurid theropod

See also

• Earth sciences portal
• Paleontology portal
• Dinosaurs portal

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with few dinosaur genera

Footnotes

1. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
2. Ratkevich, R. (1998). "New Cretaceous brachiosaurid dinosaur, Sonorasaurus thompsoni gen. et sp. nov, from Arizona". Journal of the Arizona-Nevada Academy of Science. 31 (1): 71–82.
3. Oswald, T.; Boisvert, C.; D'amore, D.; Curtice, B. (2025). ""Here be Dragons": Shed Teeth Potentially Indicate the Presence of Multiple Unidentified Allosauroids from the Early Cretaceous Cedar Mountain Formation of Utah". Journal of the Arizona-Nevada Academy of Science. 50 (2): 55–129. doi:10.2181/036.050.0204.

References

• Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.