Taxon
	Irinoceras romingeri
	Merocanites houghtoni
	Michiganites
	Michiganites budunensis
	Michiganites marshallensis+
	Muensteroceras? pygmaeum
	Winchelloceras
	Winchelloceras allei+
	unrecognized sulciferus (Qualifier: sn)