Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel - plants |
| divisio | Pteridospermatophyta Meyen † |
| class | Lyginopteridopsida Novák † |
| order | Callistophytales G.W. Rothwell † |
| family | Cornucarpaceae Doweld † |
| genus | Cornucarpus E.A.N. Arber † |