Aliena Betekhtina, 1998 † (original description)
Arctocardinia Kurushin, 1998 † (original description)
Bojarkella Yazikova, 1998 † accepted as Tenea Conrad, 1870 † (original description)
Dyadodendrum Sennikov, 1998 † accepted as Archaeodendrum Obut, 1974 † (original description)
Karasidendrum Sennikov, 1998 † (original description)
Mesosapporipora Tesakov, 1998 † (original description)
Protodendrum Sennikov, 1998 † (original description)
Quadralites Tesakov, 1998 † (original description)
Rusana Betekhtina, 1998 † (original description)
Stafficallista Yazikova, 1998 † (original description)
Taimyrolobia Kurushin, 1998 † (original description)
Transitiva Betekhtina, 1998 † (original description)
Undifossula Gratsianova & Yazikov, 1998 † accepted as Protodouvillina Harper, Boucot & Johnson, 1978 † (original description)