Taxon
	Girtyoceras acutum
	Girtyoceras aeulkei
	Girtyoceras araneum
	Girtyoceras bindemanni (Qualifier: sy)
	Girtyoceras boreale
	Girtyoceras brainerdi (Qualifier: sy)
	Girtyoceras brueningianum
	Girtyoceras complicatum
	Girtyoceras cowdalense
	Girtyoceras deani
	Girtyoceras difficile
	Girtyoceras discus (Qualifier: sh)
	Girtyoceras duekemoerense
	Girtyoceras edwinae
	Girtyoceras endicottense
	Girtyoceras glabrum
	Girtyoceras goii
	Girtyoceras gordoni
	Girtyoceras hamiltonense
	Girtyoceras heishantouense (Qualifier: sn)
	Girtyoceras ibergense
	Girtyoceras ibnkhaldouni
	Girtyoceras kazakhorum
	Girtyoceras latum
	Girtyoceras luscinia
	Girtyoceras margaritatum
	Girtyoceras meslerianum+
	Girtyoceras modestum finale
	Girtyoceras modestum medium
	Girtyoceras modestum modestum
	Girtyoceras premeslerianum
	Girtyoceras primum
	Girtyoceras shorroksi
	Girtyoceras simplex
	Girtyoceras sp. (Qualifier: in)
	Girtyoceras sp.1 (Qualifier: of)
	Girtyoceras sp.2 (Qualifier: of)
	Girtyoceras sp.M (Qualifier: of)
	Girtyoceras sp.nov. (Qualifier: sy)
	Girtyoceras tomasi
	Girtyoceras waitei
	Girtyoceras welleri