After Hess, Ausich, Brett & Simms, 1999
<==o †Roveacrinida |--o †Somphocrinidae | |--o †Somphocrinus | | `-- †S. mexicanus | `--o †Osteocrinus | `-- †O. rectus |--o †Saccocomidae | |?-o †Applinocrinus | | `-- †A. texanus | `--o †Saccocoma | |-- †S. cretacea | `-- †S. tenella [S. pectinata; S. schwertschlageri] `--o †Roveacrinidae |-- †Plotocrinus |-- †Poecilocrinus `-- †Roveacrinus
Reference(s):
- Hess, H., Ausich, W. I., Brett, C. E. & Simms, M. J., (eds.) 1999: Fossil Crinoids.
–Cambridge University Press, Cambridge, England, 1999, xv-275