The Tarrant Formation is a geologic formation that dates to the Middle Cenomanian stage of the Late Cretaceous.
| Tarrant Formation | |
|---|---|
| Stratigraphic range: Middle Cenomanian | |
| Type | Geological formation |
| Unit of | Eagle Ford Group |
| Lithology | |
| Primary | Calcareous sandstone |
| Other | Siltstone, limestone, shale |
| Location | |
| Region | Texas |
| Country |  United States |
Paleobiota
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- ^ Myers, Timothy S. (2010). "A new ornithocheirid pterosaur from the Upper Cretaceous (Cenomanian–Turonian) Eagle Ford Group of Texas" (pdf). Journal of Vertebrate Paleontology. 30 (1): 280–287. doi:10.1080/02724630903413099.
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