Amphissites, Amphissites reflexa, Amphissites reflexus, Amphissites rugosus, Amphissites simplex, Anomphalus discus, Apotocardium peculiare, Aviculopecten inspeciosus, Aviculopecten jennyi, Aviculopecten morrowensis, Aviculopecten multilineatus, Aviculopecten squamula, Bairdia attenuata, Bairdia cestriensis granulosa, Bairdia granulosa, Bassleria arkansana, Bembexia lativittata, Caneyella, Caneyella peculiaris, Cardiomorpha inflata, Conocardium peculiare, Cypricardella subalata, Cypricardinia fayettevillensis, Edmondia equilateralis, Euconospira disjuncta, Geisina retiferiformis, Glyptopleura, Glyptopleura angulata, Glyptopleura inopinata, Glyptopleura inopitana, Glyptopleuridae, Graphiadactyllis arkansana, Graphiodactylus arkansanus, Griffithides mucronatus, Halliella retiferiformis, Kirkbya lindahli, Kirkbya lindahli arkansana, Kirkbya reflexa, Kirkbya simplex, Leda stevensiana, Leperditia nicklesi, Menophyllum excavatum, Menophyllum excavatum arkansanum, Michelinia meekana, Mourlonia lativittata, Orthonychia compressa, Oxydiscus venata, Oxydiscus venatus, Paladin mucronatus, Palaeacis carinata, Palaeoneilo sera, Paraparchites cyclopeus, Paraparchites nicklesi, Paraparchites nicklesi cyclopeus, Patellilabia laevigata, Patellilabia laevigatum, Patellostium laevigatum, Phestia stevensiana, Platyceras (Orthonychia) compressum, Platyceras (Platyceras) subelegans, Platyceras subelegans, Pleurodictyum meekanum, Polidevcia stevensiana, Primitia fayettevillensis, Primitia seminalis, Roundyella simplex, Sanguinolites simulans, Sansabella fayettevillensis, Serenida seminalis, Sinuitina (Vorticina) venata, Sinuitina venata, Solen nitida, Solenomorpha nitida, Solenopsis, Solenopsis nitida, Sphenotus branneri, Sphenotus dubius, Sphenotus meslerianum, Sphenotus meslerianus, Sphenotus washingtonense, Sphenotus washingtonensis, Trepospira (Angyomphalus) discus, Tropidodiscus venata, Vorticina venata, Zaphrentites arkansanus

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