Tensleep Sandstone facts for kids
Quick facts for kidsTensleep Formation
Stratigraphic range: Late Pennsylvanian-very Early Permian
|Underlies||Phosphoria & Chugwater Formations|
|Overlies||Sacajewea & Amsden Formations|
|Thickness||up to 535 feet (160 m)|
|Named for||Ten Sleep, Wyoming|
|Named by||N.H. Darton|
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.
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