The Almond Formation is a geological formation of Late Cretaceous (Late Campanian-Early Maastrichtian[1]) age in Wyoming. It was deposited in marsh, deltaic, lagoonal, estuarine, and shallow marine environments along the western shore of the Western Interior Seaway. It consists primarily of fine- to medium-grained sandstone, siltstone, shale, and coal.[2] Fossils from the Almond Formation include remains of dinosaurs[3] and plants.[4]
| Almond Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Underlies | Lewis Shale |
| Overlies | Ericson Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone, shale, coalb |
| Location | |
| Coordinates | 41°36′25″N 109°13′34″W / 41.60694°N 109.22611°W |
| Region | Wyoming |
| Country | United States |
 Southwestern Wyoming, incl. Almond formation | |
Vertebrate paleofauna
Dinosaurs
Color key
| Notes Uncertain or tentative taxa are in small text; |
| Dinosaurs of the Almond Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Indeterminate | Represents a new genus and species of unnamed ceratopsid |      | ||||
Indeterminate[5] | ||||||
Indeterminate[5] | ||||||
Indeterminate[5] | ||||||
Indeterminate[5] | ||||||
P. lacustris[5] | ||||||
Indeterminate[6] | ||||||
Unnamed chasmosaurine ceratopsid[7] | Unnamed | Misidentified as Anchiceratops, it is actually a new species of Pentaceratops-like form that is the sister taxon to Bisticeratops.[8] Holotype was discovered in 1937. | ||||
See also
Footnotes
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.