Fort Crittenden Formation
| Fort Crittenden Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous | |
| Type | Geological formation |
| Underlies | Salero Formation |
| Location | |
| Region | North America |
| Country | United States |
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.[1]
Vertebrate paleofauna
[edit]Amphibians
[edit]| Amphibians of the Fort Crittenden Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | |
|
Indeterminate |
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|
Indeterminate |
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Archosaurs
[edit]| Archosaurs of the Fort Crittenden Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
|
Alligatoridae |
Indeterminate |
Known 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. |
 | ||
|
Indeterminate[1] |
||||||
|
C. krzyzanowskii[3] |
A centrosaurine ceratopsid. |
|||||
|
cf. Richardoestesia |
Indeterminate |
|||||
|
Dromaeosauridae |
Indeterminate |
|||||
Bony fishes
[edit]| Bony fishes of the Fort Crittenden Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
|
Indeterminate |
 | |||||
|
Indeterminate |
||||||
Cartilaginous fishes
[edit]| Cartilaginous fishes of the Fort Crittenden Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | |
|
M. bipartitus |
||||||
Lepidosaurs
[edit]Teiid and anguid lizards are known from the formation.
Turtles
[edit]| Turtles of the Fort Crittenden Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | |
See also
[edit]
Footnotes
[edit]- ^ a b c 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. ISBN 0520242092.
- ^ D’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.
- ^ Sebastian 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.
References
[edit]- 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[permanent dead link]." 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. ISBN 0520242092.
31°49′24″N 110°38′25″W / 31.8234°N 110.6404°W
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