Fort Crittenden Formation | |
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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]
Amphibians of the Fort Crittenden Formation | ||||||
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Genus | Species | Location | Stratigraphic position | Abundance | Notes | |
Indeterminate |
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Indeterminate |
Archosaurs of the Fort Crittenden Formation | ||||||
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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. |
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Indeterminate[1] |
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C. krzyzanowskii[3] |
A centrosaurine ceratopsid. |
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cf. Richardoestesia |
Indeterminate |
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Dromaeosauridae |
Indeterminate |
Bony fishes of the Fort Crittenden Formation | ||||||
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Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Indeterminate |
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Indeterminate |
Cartilaginous fishes of the Fort Crittenden Formation | ||||||
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Genus | Species | Location | Stratigraphic position | Abundance | Notes | |
M. bipartitus |
Teiid and anguid lizards are known from the formation.
Turtles of the Fort Crittenden Formation | ||||||
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Genus | Species | Location | Stratigraphic position | Abundance | Notes | |
Plastomenus |