Witts Springs Formation

The Witts Springs Formation is a sandstone geologic formation in Arkansas with thin layers of limestone, shale, and siltstone. It preserves fossils dating back to the Carboniferous period.

Bivalves

 * Aviculopecten
 * A. arkansanus


 * Conocardium
 * Myalina
 * Pleurophorus
 * Posidonia
 * Sphenotus

Brachiopods

 * Antiquatonia
 * A. morrowensis


 * Composita
 * C. ozarkana


 * Juresania
 * Linoproductus
 * Schizophoria
 * S. altirostris


 * Spirifer

Cephalopods

 * Gastrioceras
 * G. adaense


 * Glaphyrites
 * G. globosus
 * G. morrowensis
 * G. oblatus


 * Mooreoceras
 * Pygmaeoceras
 * Stenopronorites
 * S. arkansiensis

Coral

 * Michelinia

Gastropods

 * Bellerophon
 * Donaldina
 * Euphemites
 * Glabrocingulum
 * Knightites (Retispira or Cymatospire)

Scaphopods

 * Laevidentalium

Trilobites

 * Paladin