sagittatum Lepidostrobus L. occidentalis Lepidostrous Lyginopteris L. royalii Medullosa Neuropteris Pachytesta Rhacopteris Rhynchogonium R. fayettevillense Rhynochosperma R. quinnii Sphenopteris S. (Palmatopteris) erectiloba S. (Calymmatotheca) mississippiana Stigmaria S. arkansana S. wedingtonensis Tivena T. arkansana Fauna Vertebrates Carcharopsis wortheni "Cobelodus" Ozarcus mapesae Echinoderms Acrocrinus constrictus Agassizocrinus conicus Alcimocrinus ornatus Allocatillocrinus carpenteri Ampelocrinus erectus Aphelecrinus exoticus A. planus Childonocrinus trinodus Cymbiocrinus gravis Dasciocrinus aulicus Heliosocrinus aftonensis Intermediacrinus modernus Linocrinus Mantikosocrinus castus Onchyocrinus Onychocrinus pulaskiensis Ophiurocrinus hebdenensis Pentremites platybasis P. pulchellus Phacelocrinus Phanocrinus P. alexanderi P. cylindricus P. formosus Scytalocrinus aftonensis Taxocrinus cestriensis T. whitefieldi. Ulrichicrinus chesterensis Cephalopods Arcanoceras furnishi Cluthoceras glicki Cluthoceras pisiforme Cravenoceras fayettevillae Cravenoceras lineolatum Dombarites mapesi Eurmorphoceras plummeri Fayettevillea planorbis Girtyoceras Goniatites granosus Lusitanites subcircularis Metadimorphoceras wiswellense Neoglyphioceras crebriliratum Paracravenoceras ozarkense Paradimorphoceras Pronorites baconi Rayonnoceras solidiforme Tumulites varians Corals Amplexus expansus Michelinia meekana Palaecris carinata Bivalves Aviculopecten squamula Aviculopecten jennyi Aviculopecten multilineatus Aviculopecten morrowensis Aviculopecten inspeciosus Canyella peculiaris Cardiomorpha inflata Conocardium peculiare Cypricardia fayettevillensis Cyprecardella sublata Edmondia equilateralis Palaeoneilo sera Phestia stevensiana <ref name = pojeta/ Sanguinolites simulans Solenamorpha nitida Sphenotus branneri Sphenotus washingtonensis Sphenotus dubius Sphenotus meslerianus Brachiopods Adairia adairensis Inflatia gracilis Inflatia cherokeensis Inflatia pusilla Inflatia inflata Orthotetes protensus Orthotetes subglobosus Gastropods Euconospira disjuncta Mourlonia lativittata Patellilabia laevigata Platyceras subelegans Platyceras compressum Sinuitina venata Trepospira discus Arthropods Amphissites Bairdia Cyrtoproetus kerhini Kirkbya Geisina Glyptopleura Graphiadactyllis Orthobairdia Paladin murconatus Paraparchites Roundyella Sansabella Serenida Ostracods Cavellina Kegelites Sargentina Bryozoans Archimedes communis Archimedes compactus Archimedes confertus Archimedes distans Archimedes inflatus Archimedes intermedius Archimedes invaginatus Archimedes meekanus Archimedes owenanus Archimedes proutanus Archimedes sublaxus Archimedes terebriformis Batostomella parvula Fenestella cestriensis Fenestella compress Fenestella elevatipora Fenestella serratula Fenestella tenax Leioclema Polypora cestriensis Polypora corticosa Polypora spinulifera Rhombopora tabulata Septopora cestriensis Streblotrypa nicklesi Streblotrypa subspinosa Sulcoretepora americana Sulcoretepora labiosa Sulcoretepora nitida Thamniscus turcillatus Foraminifera Earlandia Eosigmoilina rugosa Trace Fossils Cruziana Planolites Teichichnus References Geologic formations of Arkansas Carboniferous Arkansas Mississippian United States Serpukhovian Shale formations of the United States Oil-bearing shales in the United States Natural gas fields in the United States Carboniferous System of North America Carboniferous southern paleotropical deposits