formation | Command (military formation) | The Caucasian Chalk Circle | Elliot Formation | Chalk River Laboratories | chalk | Sarasota Chalk Festival | Lance Formation | Crato Formation | Chinle Formation | Chalk (TV series) | Chalk | Al Chalk | Two Medicine Formation | Tamayama Formation | Simon in the Land of Chalk Drawings | Missing Man Formation (band) | Missing Man Formation | Marcellus Formation | Kirkwood Formation | Gettysburg Formation | Clarens Formation | Chalk Cliffs on Rügen | Whitby Mudstone Formation | Tunbridge Wells Sand Formation | Scribbled in Chalk | Santana Formation | Phalanx formation | phalanx formation | O. Roy Chalk |
It lived during the Late Cretaceous about 80 mya and is known from fossils found in the Mooreville Chalk Formation in Greene County, Alabama.
The holotype and only known specimen of S. russelli was found from the Mooreville Chalk Formation (Campanian stage) of western Alabama.