| Dendrocerotaceae J. Haseg., 1988 |
| Megaceros Campb., 1907 |
| Megaceros mexicanus Steph., 1916 |
| Nothoceros (R.M. Schust.) J. Haseg., 1994 |
| Nothoceros aenigmaticus J.C. Villarreal & K.D. McFarland, 2010 |
| Nothoceros vincentianus (Lehm. & Lindenb.) J.C. Villarreal, 2010 |
| Phaeomegaceros R.J. Duff, J.C. Villarreal, Cargill & Renzaglia, 2007 |
| Phaeomegaceros fimbriatus (Gottsche) R.J. Duff, J.C. Villarreal, Cargill & Renzaglia, 2007 |