Taxon
	Axinolobus modulus+
	Axinolobus quinni
	Bisatoceras micromphalum
	Boesites scotti
	Branneroceras branneri+*
	Cymoceras miseri+
	Deleshumardites morrowanus*
	Diaboloceras neumeieri*
	Gaitherites morrowensis*
	Gastrioceras araium
	Gastrioceras attenuatum
	Gastrioceras fittsi
	Phaneroceras compressum+*
	Pseudobisatoceras secundum+
	Pseudopronorites arkansiensis*
	Syngastrioceras oblatum*
	Wiedeyoceras smithi