Delesserites (Brongniart) Sternberg, 1833 genus accepted

Ceramiaceae family accepted

Sarcomeniaceae family accepted

Inkyuleeaceae family accepted

Callithamniaceae family accepted

Spyridiaceae family accepted

Dasyaceae family accepted

Delesseriaceae family accepted

Rhodomelaceae family accepted

Paleothamnion Parker & Dawson, 1965 genus accepted

Wrangeliaceae family accepted

Ptilocladiopsis Berthold, 1882 genus accepted