<==o Phoronida (tupsumadot) |?- †Talpina |?- †Calciroda |--o Phoronis Wright, 1856 | |-- P. architecta | |-- P. hippocrepia | |-- P. Mülleri | |-- P. ovalis | |-- P. pallida | |-- P. psammophila | `-- P. vancouverensis `--o Phoronopsis Gilchrist, 1907 |-- P. californica |-- P. harmeri `-- P. viridis
- Anonymous, 2003: Class Phoronida
–iNet: http://www.com.univ-mrs.fr/dimar/Phoro/syst/Phoronida/Phoronida_EN.html - Hess, H., Ausich, W. I., Brett, C. E. & Simms, M. J., (eds.) 1999: Fossil Crinoids.
–Cambridge University Press, Cambridge, England, 1999, xv-275