Type Geological formation Other Limestone Country USA Primary Sandstone Overlies Amsden Formation | Thickness up to 535 feet (160 m) Region Wyoming Named by N.H. Darton, 1904 Named for Ten Sleep | |
Underlies Phosphoria Formation, Chugwater Formation | ||
The Tensleep Sandstone is a geological formation of Pennsylvanian to very early Permian age in Wyoming.
Trace fossils
In 1932 Edward Branson and Maurice Mehl reported the discovery of a fossil trackway in the formation. A new ichnospecies, Steganoposaurus belli, was erected for these footprints. The tracks were probably made by a web-footed animal slightly less than three feet long. This creature was originally presumed to be an amphibian, but the toe prints it left behind were pointed like a reptile's rather than round like an amphibians. The actual trackmaker may have been similar to the genus Hylonomus. The ichnogenus Tridentichnus are similar footprints preserved in the Supai Formation of Arizona.
References
Tensleep Sandstone Wikipedia(Text) CC BY-SA